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clang-p2996/llvm/test/Transforms/InstSimplify/strictfp-fsub.ll
Kevin P. Neal d43d9e1d5c [FPEnv][InstSimplify] Fold fsub -0.0, -X ==> X 
Currently the fsub optimizations in InstSimplify don't know how to fold
-0.0 - (-X) to X when the constrained intrinsics are used. This adds partial
support. The rest of the support will come later with work on the IR
matchers.

This review is split out from D107285.

Differential Revision: https://reviews.llvm.org/D123396
2022-04-14 11:48:54 -04:00

730 lines
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
;
; constrained fsub
;
;
; fsub X, +0 ==> X
;
define float @fsub_x_p0_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_x_p0_defaultenv(
; CHECK-NEXT: ret float [[A:%.*]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_x_p0_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_x_p0_ebmaytrap(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0:[0-9]+]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
define float @fsub_nnan_x_p0_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_nnan_x_p0_ebmaytrap(
; CHECK-NEXT: ret float [[A:%.*]]
;
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_x_p0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_x_p0_ebstrict(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: The instruction is expected to remain, but the result isn't used.
define float @fsub_nnan_x_p0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_nnan_x_p0_ebstrict(
; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[A]]
;
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; Test with a fast math flag set but that flag is not "nnan".
define float @fsub_ninf_x_p0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_ninf_x_p0_ebstrict(
; CHECK-NEXT: [[RET:%.*]] = call ninf float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call ninf float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; Round to -inf and if x is zero then the result is -0.0: must not fire
define float @fsub_x_p0_neginf(float %a) #0 {
; CHECK-LABEL: @fsub_x_p0_neginf(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.downward", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Dynamic rounding means the rounding mode might be to -inf:
; Round to -inf and if x is zero then the result is -0.0: must not fire
define float @fsub_x_p0_dynamic(float %a) #0 {
; CHECK-LABEL: @fsub_x_p0_dynamic(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
ret float %ret
}
; With nsz we don't have to worry about -0.0 so the transform is valid.
define float @fsub_nsz_x_p0_neginf(float %a) #0 {
; CHECK-LABEL: @fsub_nsz_x_p0_neginf(
; CHECK-NEXT: ret float [[A:%.*]]
;
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.downward", metadata !"fpexcept.ignore") #0
ret float %ret
}
; With nsz we don't have to worry about -0.0 so the transform is valid.
define float @fsub_nsz_x_p0_dynamic(float %a) #0 {
; CHECK-LABEL: @fsub_nsz_x_p0_dynamic(
; CHECK-NEXT: ret float [[A:%.*]]
;
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float %a, float 0.0, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
ret float %ret
}
;
; fsub X, -0 ==> X, when we know X is not -0
; (fast math flag: nsz)
;
define float @fold_fsub_nsz_x_n0_defaultenv(float %a) #0 {
; CHECK-LABEL: @fold_fsub_nsz_x_n0_defaultenv(
; CHECK-NEXT: ret float [[A:%.*]]
;
%sub = call nsz float @llvm.experimental.constrained.fsub.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %sub
}
; Missing nnan: must not fire.
define float @fold_fsub_nsz_x_n0_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fold_fsub_nsz_x_n0_ebmaytrap(
; CHECK-NEXT: [[SUB:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[SUB]]
;
%sub = call nsz float @llvm.experimental.constrained.fsub.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %sub
}
define float @fold_fsub_nnan_nsz_x_n0_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fold_fsub_nnan_nsz_x_n0_ebmaytrap(
; CHECK-NEXT: ret float [[A:%.*]]
;
%sub = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %sub
}
; Missing nnan: must not fire.
define float @fold_fsub_nsz_x_n0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fold_fsub_nsz_x_n0_ebstrict(
; CHECK-NEXT: [[SUB:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[SUB]]
;
%sub = call nsz float @llvm.experimental.constrained.fsub.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %sub
}
; TODO: The instruction is expected to remain, but the result isn't used.
define float @fold_fsub_nsz_nnan_x_n0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fold_fsub_nsz_nnan_x_n0_ebstrict(
; CHECK-NEXT: [[SUB:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[A]]
;
%sub = call nsz nnan float @llvm.experimental.constrained.fsub.f32(float %a, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %sub
}
;
; fsub X, -0 ==> X, when we know X is not -0
; (No "nsz" flags)
;
define float @fold_fsub_fabs_x_n0_defaultenv(float %a) #0 {
; CHECK-LABEL: @fold_fsub_fabs_x_n0_defaultenv(
; CHECK-NEXT: [[ABSA:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]])
; CHECK-NEXT: ret float [[ABSA]]
;
%absa = call float @llvm.fabs.f32(float %a)
%sub = call float @llvm.experimental.constrained.fsub.f32(float %absa, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %sub
}
; Missing nnan: must not fire.
define float @fold_fsub_fabs_x_n0_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fold_fsub_fabs_x_n0_ebmaytrap(
; CHECK-NEXT: [[ABSA:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]])
; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[ABSA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[SUB]]
;
%absa = call float @llvm.fabs.f32(float %a)
%sub = call float @llvm.experimental.constrained.fsub.f32(float %absa, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %sub
}
define float @fold_fsub_fabs_nnan_x_n0_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fold_fsub_fabs_nnan_x_n0_ebmaytrap(
; CHECK-NEXT: [[ABSA:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]])
; CHECK-NEXT: ret float [[ABSA]]
;
%absa = call float @llvm.fabs.f32(float %a)
%sub = call nnan float @llvm.experimental.constrained.fsub.f32(float %absa, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %sub
}
; Missing nnan: must not fire.
define float @fold_fsub_fabs_x_n0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fold_fsub_fabs_x_n0_ebstrict(
; CHECK-NEXT: [[ABSA:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]])
; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[ABSA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[SUB]]
;
%absa = call float @llvm.fabs.f32(float %a)
%sub = call float @llvm.experimental.constrained.fsub.f32(float %absa, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %sub
}
; TODO: The instruction is expected to remain, but the result isn't used.
define float @fold_fsub_fabs_nnan_x_n0_ebstrict(float %a) #0 {
; CHECK-LABEL: @fold_fsub_fabs_nnan_x_n0_ebstrict(
; CHECK-NEXT: [[ABSA:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]])
; CHECK-NEXT: [[SUB:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[ABSA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[ABSA]]
;
%absa = call float @llvm.fabs.f32(float %a)
%sub = call nnan float @llvm.experimental.constrained.fsub.f32(float %absa, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %sub
}
define float @fold_fsub_sitofp_x_n0_defaultenv(i32 %a) #0 {
; CHECK-LABEL: @fold_fsub_sitofp_x_n0_defaultenv(
; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[FPA]]
;
%fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%sub = call float @llvm.experimental.constrained.fsub.f32(float %fpa, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %sub
}
;
; fsub -0.0, (fneg X) ==> X
;
define float @fsub_fneg_n0_fnX_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_n0_fnX_defaultenv(
; CHECK-NEXT: ret float [[A:%.*]]
;
%nega = fneg float %a
%ret = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fneg_n0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_n0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = fneg float %a
%ret = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
define float @fsub_fneg_nnan_n0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nnan_n0_fnX_ebmaytrap(
; CHECK-NEXT: ret float [[A:%.*]]
;
%nega = fneg float %a
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fneg_n0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_n0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = fneg float %a
%ret = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; NOTE: The instruction is expected to remain, but the result isn't used.
define float @fsub_fneg_nnan_n0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nnan_n0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[A]]
;
%nega = fneg float %a
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
;
; fsub -0.0, (fsub -0.0, X) ==> X
;
; TODO: This won't fire without m_FNeg() knowing the constrained intrinsics.
define float @fsub_fsub_n0_fnX_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_n0_fnX_defaultenv(
; CHECK-NEXT: [[NEGA:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fsub_n0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_n0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; TODO: This won't fire without m_FNeg() knowing the constrained intrinsics.
define float @fsub_fsub_nnan_n0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_nnan_n0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fsub_n0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_n0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: This won't fire without m_FNeg() knowing the constrained intrinsics.
define float @fsub_fsub_nnan_n0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_nnan_n0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
;
; fsub 0.0, (fneg X) ==> X if signed zeros are ignored.
;
define float @fsub_fneg_nsz_p0_fnX_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nsz_p0_fnX_defaultenv(
; CHECK-NEXT: ret float [[A:%.*]]
;
%nega = fneg float %a
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fneg_nsz_p0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nsz_p0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = fneg float %a
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; TODO: This will fold if we allow non-default floating point environments.
define float @fsub_fneg_nsz_nnan_p0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nsz_nnan_p0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = fneg float %a
%ret = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fneg_nsz_p0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nsz_p0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = fneg float %a
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: This will fold if we allow non-default floating point environments.
; TODO: The instruction is expected to remain, but the result isn't used.
define float @fsub_fneg_nnan_nsz_p0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fneg_nnan_nsz_p0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = fneg float [[A:%.*]]
; CHECK-NEXT: [[RET:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = fneg float %a
%ret = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
;
; fsub 0.0, (fsub 0.0, X) ==> X if signed zeros are ignored.
;
; TODO: Need constrained intrinsic support in m_FNeg() and m_FSub to fire.
define float @fsub_fsub_p0_nsz_fnX_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_p0_nsz_fnX_defaultenv(
; CHECK-NEXT: [[NEGA:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fsub_nsz_p0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_nsz_p0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_FNeg() and m_FSub to fire.
define float @fsub_fsub_nnan_nsz_p0_fnX_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_nnan_nsz_p0_fnX_ebmaytrap(
; CHECK-NEXT: [[NEGA:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_fsub_nsz_p0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_nsz_p0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_FNeg() and m_FSub to fire.
define float @fsub_fsub_nnan_nsz_p0_fnX_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_fsub_nnan_nsz_p0_fnX_ebstrict(
; CHECK-NEXT: [[NEGA:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[NEGA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%nega = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call nnan nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %nega, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
;
; fsub nnan x, x ==> 0.0
;
; Missing nnan: must not fire.
define float @fsub_x_x_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_x_x_defaultenv(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
define float @fsub_nnan_x_x_defaultenv(float %a) #0 {
; CHECK-LABEL: @fsub_nnan_x_x_defaultenv(
; CHECK-NEXT: ret float 0.000000e+00
;
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_x_x_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_x_x_ebmaytrap(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; TODO: This will fold if we allow non-default floating point environments.
define float @fsub_nnan_x_x_ebmaytrap(float %a) #0 {
; CHECK-LABEL: @fsub_nnan_x_x_ebmaytrap(
; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nnan: must not fire.
define float @fsub_x_x_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_x_x_ebstrict(
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: This will fold if we allow non-default floating point environments.
; TODO: The instruction is expected to remain, but the result isn't used.
define float @fsub_nnan_x_x_ebstrict(float %a) #0 {
; CHECK-LABEL: @fsub_nnan_x_x_ebstrict(
; CHECK-NEXT: [[RET:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%ret = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
;
; Y - (Y - X) --> X
;
; Missing nsz and reassoc: must not fire
define float @fsub_fsub_y_x_x_defaultenv(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_y_x_x_defaultenv(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_c_FAdd() and m_FSub to fire.
define float @fsub_fsub_fmf_y_x_x_defaultenv(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_fmf_y_x_x_defaultenv(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; TODO: Consider how alternate rounding modes can break these transforms.
; The "fpexcept.maytrap" instruction must _not_ be folded into the
; "fpexcept.ignore" instruction. This must not fire.
define float @fsub_fsub_fmf_y_x_x_ebmaytrap_defaultenv(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_fmf_y_x_x_ebmaytrap_defaultenv(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nsz and reassoc: must not fire
define float @fsub_fsub_y_x_x_ebmaytrap(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_y_x_x_ebmaytrap(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_c_FAdd() and m_FSub to fire.
define float @fsub_fsub_fmf_y_x_x_ebmaytrap(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_fmf_y_x_x_ebmaytrap(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nsz and reassoc: must not fire
define float @fsub_fsub_y_x_x_ebstrict(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_y_x_x_ebstrict(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_c_FAdd() and m_FSub to fire.
define float @fsub_fsub_fmf_y_x_x_ebstrict(float %x, float %y) #0 {
; CHECK-LABEL: @fsub_fsub_fmf_y_x_x_ebstrict(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[Y:%.*]], float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[Y]], float [[INNER]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fsub.f32(float %y, float %x, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %y, float %inner, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
;
; (X + Y) - Y --> X
; TODO: Missing IR matcher support means these won't fire.
;
; Missing nsz and reassoc: must not fire
define float @fadd_fsub_x_y_y_defaultenv(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_x_y_y_defaultenv(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_c_FAdd() and m_FSub to fire.
define float @fadd_fsub_fmf_x_y_y_defaultenv(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_fmf_x_y_y_defaultenv(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; The "fpexcept.maytrap" instruction must _not_ be folded into the
; "fpexcept.ignore" instruction. This must not fire.
define float @fadd_fsub_fmf_x_y_y_ebmaytrap_defaultenv(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_fmf_x_y_y_ebmaytrap_defaultenv(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
ret float %ret
}
; Missing nsz and reassoc: must not fire
define float @fadd_fsub_x_y_y_ebmaytrap(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_x_y_y_ebmaytrap(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_c_FAdd() and m_FSub to fire.
define float @fadd_fsub_fmf_x_y_y_ebmaytrap(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_fmf_x_y_y_ebmaytrap(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
ret float %ret
}
; Missing nsz and reassoc: must not fire
define float @fadd_fsub_x_y_y_ebstrict(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_x_y_y_ebstrict(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
; TODO: Need constrained intrinsic support in m_c_FAdd() and m_FSub to fire.
define float @fadd_fsub_fmf_x_y_y_ebstrict(float %x, float %y) #0 {
; CHECK-LABEL: @fadd_fsub_fmf_x_y_y_ebstrict(
; CHECK-NEXT: [[INNER:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X:%.*]], float [[Y:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: [[RET:%.*]] = call reassoc nsz float @llvm.experimental.constrained.fsub.f32(float [[INNER]], float [[Y]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret float [[RET]]
;
%inner = call float @llvm.experimental.constrained.fadd.f32(float %x, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
%ret = call nsz reassoc float @llvm.experimental.constrained.fsub.f32(float %inner, float %y, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
ret float %ret
}
declare float @llvm.fabs.f32(float)
declare <2 x float> @llvm.fabs.v2f32(<2 x float>)
declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata) #0
declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata) #0
declare float @llvm.experimental.constrained.sitofp.f32.i32(i32, metadata, metadata) #0
attributes #0 = { strictfp }
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