a105877646
The idea behind this canonicalization is that it allows us to handle less patterns, because we know that some will be canonicalized away. This is indeed very useful to e.g. know that constants are always on the right. However, this is only useful if the canonicalization is actually reliable. This is the case for constants, but not for arguments: Moving these to the right makes it look like the "more complex" expression is guaranteed to be on the left, but this is not actually the case in practice. It fails as soon as you replace the argument with another instruction. The end result is that it looks like things correctly work in tests, while they actually don't. We use the "thwart complexity-based canonicalization" trick to handle this in tests, but it's often a challenge for new contributors to get this right, and based on the regressions this PR originally exposed, we clearly don't get this right in many cases. For this reason, I think that it's better to remove this complexity canonicalization. It will make it much easier to write tests for commuted cases and make sure that they are handled.
398 lines
14 KiB
LLVM
398 lines
14 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
|
|
|
|
define i32 @extract_load(ptr %p) {
|
|
;
|
|
; CHECK-LABEL: @extract_load(
|
|
; CHECK-NEXT: [[X:%.*]] = load <4 x i32>, ptr [[P:%.*]], align 4
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x i32> [[X]], i64 1
|
|
; CHECK-NEXT: ret i32 [[EXT]]
|
|
;
|
|
%x = load <4 x i32>, ptr %p, align 4
|
|
%ext = extractelement <4 x i32> %x, i32 1
|
|
ret i32 %ext
|
|
}
|
|
|
|
define double @extract_load_fp(ptr %p) {
|
|
;
|
|
; CHECK-LABEL: @extract_load_fp(
|
|
; CHECK-NEXT: [[X:%.*]] = load <4 x double>, ptr [[P:%.*]], align 32
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x double> [[X]], i64 3
|
|
; CHECK-NEXT: ret double [[EXT]]
|
|
;
|
|
%x = load <4 x double>, ptr %p, align 32
|
|
%ext = extractelement <4 x double> %x, i32 3
|
|
ret double %ext
|
|
}
|
|
|
|
define double @extract_load_volatile(ptr %p) {
|
|
;
|
|
; CHECK-LABEL: @extract_load_volatile(
|
|
; CHECK-NEXT: [[X:%.*]] = load volatile <4 x double>, ptr [[P:%.*]], align 32
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x double> [[X]], i64 2
|
|
; CHECK-NEXT: ret double [[EXT]]
|
|
;
|
|
%x = load volatile <4 x double>, ptr %p
|
|
%ext = extractelement <4 x double> %x, i32 2
|
|
ret double %ext
|
|
}
|
|
|
|
define double @extract_load_extra_use(ptr %p, ptr %p2) {
|
|
;
|
|
; CHECK-LABEL: @extract_load_extra_use(
|
|
; CHECK-NEXT: [[X:%.*]] = load <4 x double>, ptr [[P:%.*]], align 8
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x double> [[X]], i64 0
|
|
; CHECK-NEXT: store <4 x double> [[X]], ptr [[P2:%.*]], align 32
|
|
; CHECK-NEXT: ret double [[EXT]]
|
|
;
|
|
%x = load <4 x double>, ptr %p, align 8
|
|
%ext = extractelement <4 x double> %x, i32 0
|
|
store <4 x double> %x, ptr %p2
|
|
ret double %ext
|
|
}
|
|
|
|
define double @extract_load_variable_index(ptr %p, i32 %y) {
|
|
;
|
|
; CHECK-LABEL: @extract_load_variable_index(
|
|
; CHECK-NEXT: [[X:%.*]] = load <4 x double>, ptr [[P:%.*]], align 32
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x double> [[X]], i32 [[Y:%.*]]
|
|
; CHECK-NEXT: ret double [[EXT]]
|
|
;
|
|
%x = load <4 x double>, ptr %p
|
|
%ext = extractelement <4 x double> %x, i32 %y
|
|
ret double %ext
|
|
}
|
|
|
|
define void @scalarize_phi(ptr %n, ptr %inout) {
|
|
;
|
|
; CHECK-LABEL: @scalarize_phi(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[T0:%.*]] = load volatile float, ptr [[INOUT:%.*]], align 4
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = phi float [ [[T0]], [[ENTRY:%.*]] ], [ [[TMP1:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[I_0:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
|
|
; CHECK-NEXT: [[T1:%.*]] = load i32, ptr [[N:%.*]], align 4
|
|
; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i32 [[I_0]], [[T1]]
|
|
; CHECK-NEXT: br i1 [[CMP_NOT]], label [[FOR_END:%.*]], label [[FOR_BODY]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: store volatile float [[TMP0]], ptr [[INOUT]], align 4
|
|
; CHECK-NEXT: [[TMP1]] = fmul float [[TMP0]], 0x4002A3D700000000
|
|
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_0]], 1
|
|
; CHECK-NEXT: br label [[FOR_COND]]
|
|
; CHECK: for.end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%t0 = load volatile float, ptr %inout, align 4
|
|
%insert = insertelement <4 x float> undef, float %t0, i32 0
|
|
%splat = shufflevector <4 x float> %insert, <4 x float> undef, <4 x i32> zeroinitializer
|
|
%insert1 = insertelement <4 x float> undef, float 3.0, i32 0
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%x.0 = phi <4 x float> [ %splat, %entry ], [ %mul, %for.body ]
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%t1 = load i32, ptr %n, align 4
|
|
%cmp = icmp ne i32 %i.0, %t1
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body:
|
|
%t2 = extractelement <4 x float> %x.0, i32 1
|
|
store volatile float %t2, ptr %inout, align 4
|
|
%mul = fmul <4 x float> %x.0, <float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000>
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end:
|
|
ret void
|
|
}
|
|
|
|
define float @extract_element_binop_splat_constant_index(<4 x float> %x) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_splat_constant_index(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> [[X:%.*]], i64 2
|
|
; CHECK-NEXT: [[R:%.*]] = fadd float [[TMP1]], 0x4002A3D700000000
|
|
; CHECK-NEXT: ret float [[R]]
|
|
;
|
|
%b = fadd <4 x float> %x, <float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000>
|
|
%r = extractelement <4 x float> %b, i32 2
|
|
ret float %r
|
|
}
|
|
|
|
define double @extract_element_binop_splat_with_undef_constant_index(<2 x double> %x) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_splat_with_undef_constant_index(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x double> [[X:%.*]], i64 0
|
|
; CHECK-NEXT: [[R:%.*]] = fdiv double 4.200000e+01, [[TMP1]]
|
|
; CHECK-NEXT: ret double [[R]]
|
|
;
|
|
%b = fdiv <2 x double> <double 42.0, double undef>, %x
|
|
%r = extractelement <2 x double> %b, i32 0
|
|
ret double %r
|
|
}
|
|
|
|
define float @extract_element_binop_nonsplat_constant_index(<2 x float> %x) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_nonsplat_constant_index(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x float> [[X:%.*]], i64 1
|
|
; CHECK-NEXT: [[R:%.*]] = fmul float [[TMP1]], 4.300000e+01
|
|
; CHECK-NEXT: ret float [[R]]
|
|
;
|
|
%b = fmul <2 x float> %x, <float 42.0, float 43.0>
|
|
%r = extractelement <2 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
define i8 @extract_element_binop_splat_variable_index(<4 x i8> %x, i32 %y) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_splat_variable_index(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x i8> [[X:%.*]], i32 [[Y:%.*]]
|
|
; CHECK-NEXT: [[R:%.*]] = sdiv i8 [[TMP1]], 42
|
|
; CHECK-NEXT: ret i8 [[R]]
|
|
;
|
|
%b = sdiv <4 x i8> %x, <i8 42, i8 42, i8 42, i8 42>
|
|
%r = extractelement <4 x i8> %b, i32 %y
|
|
ret i8 %r
|
|
}
|
|
|
|
; We cannot move the extractelement before the sdiv here, because %z may be
|
|
; out of range, making the divisor poison and resulting in immediate UB.
|
|
define i8 @extract_element_binop_splat_variable_index_may_trap(<4 x i8> %x, <4 x i8> %y, i32 %z) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_splat_variable_index_may_trap(
|
|
; CHECK-NEXT: [[B:%.*]] = sdiv <4 x i8> <i8 42, i8 42, i8 42, i8 42>, [[Y:%.*]]
|
|
; CHECK-NEXT: [[R:%.*]] = extractelement <4 x i8> [[B]], i32 [[Z:%.*]]
|
|
; CHECK-NEXT: ret i8 [[R]]
|
|
;
|
|
%b = sdiv <4 x i8> splat (i8 42), %y
|
|
%r = extractelement <4 x i8> %b, i32 %z
|
|
ret i8 %r
|
|
}
|
|
|
|
; Moving the extractelement first is fine here, because the index is known to
|
|
; be valid, so we can't introduce additional poison.
|
|
define i8 @extract_element_binop_constant_index_may_trap(<4 x i8> %x, <4 x i8> %y, i32 %z) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_constant_index_may_trap(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x i8> [[Y:%.*]], i64 3
|
|
; CHECK-NEXT: [[R:%.*]] = sdiv i8 42, [[TMP1]]
|
|
; CHECK-NEXT: ret i8 [[R]]
|
|
;
|
|
%b = sdiv <4 x i8> splat (i8 42), %y
|
|
%r = extractelement <4 x i8> %b, i32 3
|
|
ret i8 %r
|
|
}
|
|
|
|
define i8 @extract_element_binop_splat_with_undef_variable_index(<4 x i8> %x, i32 %y) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_splat_with_undef_variable_index(
|
|
; CHECK-NEXT: [[B:%.*]] = mul <4 x i8> [[X:%.*]], <i8 42, i8 42, i8 undef, i8 42>
|
|
; CHECK-NEXT: [[R:%.*]] = extractelement <4 x i8> [[B]], i32 [[Y:%.*]]
|
|
; CHECK-NEXT: ret i8 [[R]]
|
|
;
|
|
%b = mul <4 x i8> %x, <i8 42, i8 42, i8 undef, i8 42>
|
|
%r = extractelement <4 x i8> %b, i32 %y
|
|
ret i8 %r
|
|
}
|
|
|
|
define i8 @extract_element_binop_nonsplat_variable_index(<4 x i8> %x, i32 %y) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_binop_nonsplat_variable_index(
|
|
; CHECK-NEXT: [[B:%.*]] = lshr <4 x i8> [[X:%.*]], <i8 4, i8 3, i8 undef, i8 2>
|
|
; CHECK-NEXT: [[R:%.*]] = extractelement <4 x i8> [[B]], i32 [[Y:%.*]]
|
|
; CHECK-NEXT: ret i8 [[R]]
|
|
;
|
|
%b = lshr <4 x i8> %x, <i8 4, i8 3, i8 undef, i8 2>
|
|
%r = extractelement <4 x i8> %b, i32 %y
|
|
ret i8 %r
|
|
}
|
|
|
|
define float @extract_element_load(<4 x float> %x, ptr %ptr) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_load(
|
|
; CHECK-NEXT: [[LOAD:%.*]] = load <4 x float>, ptr [[PTR:%.*]], align 16
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> [[X:%.*]], i64 2
|
|
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <4 x float> [[LOAD]], i64 2
|
|
; CHECK-NEXT: [[R:%.*]] = fadd float [[TMP1]], [[TMP2]]
|
|
; CHECK-NEXT: ret float [[R]]
|
|
;
|
|
%load = load <4 x float>, ptr %ptr
|
|
%add = fadd <4 x float> %x, %load
|
|
%r = extractelement <4 x float> %add, i32 2
|
|
ret float %r
|
|
}
|
|
|
|
define float @extract_element_multi_Use_load(<4 x float> %x, ptr %ptr0, ptr %ptr1) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_multi_Use_load(
|
|
; CHECK-NEXT: [[LOAD:%.*]] = load <4 x float>, ptr [[PTR0:%.*]], align 16
|
|
; CHECK-NEXT: store <4 x float> [[LOAD]], ptr [[PTR1:%.*]], align 16
|
|
; CHECK-NEXT: [[ADD:%.*]] = fadd <4 x float> [[X:%.*]], [[LOAD]]
|
|
; CHECK-NEXT: [[R:%.*]] = extractelement <4 x float> [[ADD]], i64 2
|
|
; CHECK-NEXT: ret float [[R]]
|
|
;
|
|
%load = load <4 x float>, ptr %ptr0
|
|
store <4 x float> %load, ptr %ptr1
|
|
%add = fadd <4 x float> %x, %load
|
|
%r = extractelement <4 x float> %add, i32 2
|
|
ret float %r
|
|
}
|
|
|
|
define float @extract_element_variable_index(<4 x float> %x, i32 %y) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_variable_index(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> [[X:%.*]], i32 [[Y:%.*]]
|
|
; CHECK-NEXT: [[R:%.*]] = fadd float [[TMP1]], 1.000000e+00
|
|
; CHECK-NEXT: ret float [[R]]
|
|
;
|
|
%add = fadd <4 x float> %x, <float 1.0, float 1.0, float 1.0, float 1.0>
|
|
%r = extractelement <4 x float> %add, i32 %y
|
|
ret float %r
|
|
}
|
|
|
|
define float @extelt_binop_insertelt(<4 x float> %A, <4 x float> %B, float %f) {
|
|
;
|
|
; CHECK-LABEL: @extelt_binop_insertelt(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
|
|
; CHECK-NEXT: [[E:%.*]] = fmul nnan float [[F:%.*]], [[TMP1]]
|
|
; CHECK-NEXT: ret float [[E]]
|
|
;
|
|
%C = insertelement <4 x float> %A, float %f, i32 0
|
|
%D = fmul nnan <4 x float> %C, %B
|
|
%E = extractelement <4 x float> %D, i32 0
|
|
ret float %E
|
|
}
|
|
|
|
; We recurse to find a scalarizable operand.
|
|
define i32 @extelt_binop_binop_insertelt(<4 x i32> %A, <4 x i32> %B, i32 %f) {
|
|
;
|
|
; CHECK-LABEL: @extelt_binop_binop_insertelt(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x i32> [[B:%.*]], i64 0
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[F:%.*]], [[TMP1]]
|
|
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <4 x i32> [[B]], i64 0
|
|
; CHECK-NEXT: [[E:%.*]] = mul nsw i32 [[TMP2]], [[TMP3]]
|
|
; CHECK-NEXT: ret i32 [[E]]
|
|
;
|
|
%v = insertelement <4 x i32> %A, i32 %f, i32 0
|
|
%C = add <4 x i32> %v, %B
|
|
%D = mul nsw <4 x i32> %C, %B
|
|
%E = extractelement <4 x i32> %D, i32 0
|
|
ret i32 %E
|
|
}
|
|
|
|
define float @extract_element_constant_vector_variable_index(i32 %y) {
|
|
;
|
|
; CHECK-LABEL: @extract_element_constant_vector_variable_index(
|
|
; CHECK-NEXT: [[R:%.*]] = extractelement <4 x float> <float 1.000000e+00, float 2.000000e+00, float 3.000000e+00, float 4.000000e+00>, i32 [[Y:%.*]]
|
|
; CHECK-NEXT: ret float [[R]]
|
|
;
|
|
%r = extractelement <4 x float> <float 1.0, float 2.0, float 3.0, float 4.0>, i32 %y
|
|
ret float %r
|
|
}
|
|
|
|
define i1 @cheap_to_extract_icmp(<4 x i32> %x, <4 x i1> %y) {
|
|
;
|
|
; CHECK-LABEL: @cheap_to_extract_icmp(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x i32> [[X:%.*]], i64 2
|
|
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 0
|
|
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <4 x i1> [[Y:%.*]], i64 2
|
|
; CHECK-NEXT: [[R:%.*]] = and i1 [[TMP2]], [[TMP3]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%cmp = icmp eq <4 x i32> %x, zeroinitializer
|
|
%and = and <4 x i1> %cmp, %y
|
|
%r = extractelement <4 x i1> %and, i32 2
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @cheap_to_extract_fcmp(<4 x float> %x, <4 x i1> %y) {
|
|
;
|
|
; CHECK-LABEL: @cheap_to_extract_fcmp(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> [[X:%.*]], i64 2
|
|
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], 0.000000e+00
|
|
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <4 x i1> [[Y:%.*]], i64 2
|
|
; CHECK-NEXT: [[R:%.*]] = and i1 [[TMP2]], [[TMP3]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%cmp = fcmp oeq <4 x float> %x, zeroinitializer
|
|
%and = and <4 x i1> %cmp, %y
|
|
%r = extractelement <4 x i1> %and, i32 2
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @extractelt_vector_icmp_constrhs(<2 x i32> %arg) {
|
|
;
|
|
; CHECK-LABEL: @extractelt_vector_icmp_constrhs(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x i32> [[ARG:%.*]], i64 0
|
|
; CHECK-NEXT: [[EXT:%.*]] = icmp eq i32 [[TMP1]], 0
|
|
; CHECK-NEXT: ret i1 [[EXT]]
|
|
;
|
|
%cmp = icmp eq <2 x i32> %arg, zeroinitializer
|
|
%ext = extractelement <2 x i1> %cmp, i32 0
|
|
ret i1 %ext
|
|
}
|
|
|
|
define i1 @extractelt_vector_fcmp_constrhs(<2 x float> %arg) {
|
|
;
|
|
; CHECK-LABEL: @extractelt_vector_fcmp_constrhs(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x float> [[ARG:%.*]], i64 0
|
|
; CHECK-NEXT: [[EXT:%.*]] = fcmp oeq float [[TMP1]], 0.000000e+00
|
|
; CHECK-NEXT: ret i1 [[EXT]]
|
|
;
|
|
%cmp = fcmp oeq <2 x float> %arg, zeroinitializer
|
|
%ext = extractelement <2 x i1> %cmp, i32 0
|
|
ret i1 %ext
|
|
}
|
|
|
|
define i1 @extractelt_vector_icmp_constrhs_dynidx(<2 x i32> %arg, i32 %idx) {
|
|
;
|
|
; CHECK-LABEL: @extractelt_vector_icmp_constrhs_dynidx(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x i32> [[ARG:%.*]], i32 [[IDX:%.*]]
|
|
; CHECK-NEXT: [[EXT:%.*]] = icmp eq i32 [[TMP1]], 0
|
|
; CHECK-NEXT: ret i1 [[EXT]]
|
|
;
|
|
%cmp = icmp eq <2 x i32> %arg, zeroinitializer
|
|
%ext = extractelement <2 x i1> %cmp, i32 %idx
|
|
ret i1 %ext
|
|
}
|
|
|
|
define i1 @extractelt_vector_fcmp_constrhs_dynidx(<2 x float> %arg, i32 %idx) {
|
|
;
|
|
; CHECK-LABEL: @extractelt_vector_fcmp_constrhs_dynidx(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x float> [[ARG:%.*]], i32 [[IDX:%.*]]
|
|
; CHECK-NEXT: [[EXT:%.*]] = fcmp oeq float [[TMP1]], 0.000000e+00
|
|
; CHECK-NEXT: ret i1 [[EXT]]
|
|
;
|
|
%cmp = fcmp oeq <2 x float> %arg, zeroinitializer
|
|
%ext = extractelement <2 x i1> %cmp, i32 %idx
|
|
ret i1 %ext
|
|
}
|
|
|
|
define i1 @extractelt_vector_fcmp_copy_flags(<4 x float> %x) {
|
|
; CHECK-LABEL: @extractelt_vector_fcmp_copy_flags(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> [[X:%.*]], i64 2
|
|
; CHECK-NEXT: [[R:%.*]] = fcmp nsz arcp oeq float [[TMP1]], 0.000000e+00
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%cmp = fcmp nsz arcp oeq <4 x float> %x, zeroinitializer
|
|
%r = extractelement <4 x i1> %cmp, i32 2
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @extractelt_vector_fcmp_not_cheap_to_scalarize_multi_use(<2 x float> %arg0, <2 x float> %arg1, <2 x float> %arg2, i32 %idx) {
|
|
;
|
|
; CHECK-LABEL: @extractelt_vector_fcmp_not_cheap_to_scalarize_multi_use(
|
|
; CHECK-NEXT: [[ADD:%.*]] = fadd <2 x float> [[ARG1:%.*]], [[ARG2:%.*]]
|
|
; CHECK-NEXT: store volatile <2 x float> [[ADD]], ptr undef, align 8
|
|
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq <2 x float> [[ARG0:%.*]], [[ADD]]
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <2 x i1> [[CMP]], i64 0
|
|
; CHECK-NEXT: ret i1 [[EXT]]
|
|
;
|
|
%add = fadd <2 x float> %arg1, %arg2
|
|
store volatile <2 x float> %add, ptr undef
|
|
%cmp = fcmp oeq <2 x float> %arg0, %add
|
|
%ext = extractelement <2 x i1> %cmp, i32 0
|
|
ret i1 %ext
|
|
}
|