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clang-p2996/llvm/test/CodeGen/ARM/constantfp.ll
Jinsong Ji 01edae1271 [AsmPrinter] Print FP constant in hexadecimal form instead 
Printing floating point number in decimal is inconvenient for humans.
Verbose asm output will print out floating point values in comments, it
helps.

But in lots of cases, users still need additional work to covert the
decimal back to hex or binary to check the bit patterns,
especially when there are small precision difference.

Hexadecimal form is one of the supported form in LLVM IR, and easier for
debugging.

This patch try to print all FP constant in hex form instead.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D73566
2020-02-07 16:00:55 +00:00

229 lines
7.8 KiB
LLVM
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; RUN: llc -mtriple=armv7 -mattr=+neon -mcpu=swift %s -o - | FileCheck %s
; RUN: llc -mtriple=armv7 -mattr=+neon -mcpu=cortex-a8 %s -o - | FileCheck --check-prefix=CHECK-NONEONFP %s
; RUN: llc -mtriple=armv7 -mattr=-neon -mcpu=cortex-a8 %s -o - | FileCheck --check-prefix=CHECK-NONEON %s
; RUN: llc -mtriple=thumbv7m -mcpu=cortex-m4 %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-NO-XO %s
; RUN: llc -mtriple=thumbv7m -mattr=+execute-only -mcpu=cortex-m4 %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-XO-FLOAT --check-prefix=CHECK-XO-DOUBLE %s
; RUN: llc -mtriple=thumbv7meb -mattr=+execute-only -mcpu=cortex-m4 %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-XO-FLOAT --check-prefix=CHECK-XO-DOUBLE-BE %s
; RUN: llc -mtriple=thumbv7m -mattr=+execute-only -mcpu=cortex-m4 -relocation-model=ropi %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-XO-ROPI %s
; RUN: llc -mtriple=thumbv8m.main -mattr=fp-armv8 %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-NO-XO %s
; RUN: llc -mtriple=thumbv8m.main -mattr=+execute-only -mattr=fp-armv8 %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-XO-FLOAT --check-prefix=CHECK-XO-DOUBLE %s
; RUN: llc -mtriple=thumbv8m.maineb -mattr=+execute-only -mattr=fp-armv8 %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-XO-FLOAT --check-prefix=CHECK-XO-DOUBLE-BE %s
; RUN: llc -mtriple=thumbv8m.main -mattr=+execute-only -mattr=fp-armv8 -relocation-model=ropi %s -o - \
; RUN: | FileCheck --check-prefix=CHECK-XO-ROPI %s
define arm_aapcs_vfpcc float @test_vmov_f32() {
; CHECK-LABEL: test_vmov_f32:
; CHECK: vmov.f32 d0, #1.0
; CHECK-NONEONFP: vmov.f32 s0, #1.0
ret float 1.0
}
define arm_aapcs_vfpcc float @test_vmov_imm() {
; CHECK-LABEL: test_vmov_imm:
; CHECK: vmov.i32 d0, #0
; CHECK-NONEON-LABEL: test_vmov_imm:
; CHECK-NONEON: vldr s0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-NO-XO-LABEL: test_vmov_imm:
; CHECK-NO-XO: vldr s0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-FLOAT-LABEL: test_vmov_imm:
; CHECK-XO-FLOAT: movs [[REG:r[0-9]+]], #0
; CHECK-XO-FLOAT: vmov {{s[0-9]+}}, [[REG]]
; CHECK-XO-FLOAT-NOT: vldr
ret float 0.0
}
define arm_aapcs_vfpcc float @test_vmvn_imm() {
; CHECK-LABEL: test_vmvn_imm:
; CHECK: vmvn.i32 d0, #0xb0000000
; CHECK-NONEON-LABEL: test_vmvn_imm:
; CHECK-NONEON: vldr s0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-NO-XO-LABEL: test_vmvn_imm:
; CHECK-NO-XO: vldr s0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-FLOAT-LABEL: test_vmvn_imm:
; CHECK-XO-FLOAT: mvn [[REG:r[0-9]+]], #-1342177280
; CHECK-XO-FLOAT: vmov {{s[0-9]+}}, [[REG]]
; CHECK-XO-FLOAT-NOT: vldr
ret float 8589934080.0
}
define arm_aapcs_vfpcc double @test_vmov_f64() {
; CHECK-LABEL: test_vmov_f64:
; CHECK: vmov.f64 d0, #1.0
; CHECK-NONEON-LABEL: test_vmov_f64:
; CHECK-NONEON: vmov.f64 d0, #1.0
ret double 1.0
}
define arm_aapcs_vfpcc double @test_vmov_double_imm() {
; CHECK-LABEL: test_vmov_double_imm:
; CHECK: vmov.i32 d0, #0
; CHECK-NONEON-LABEL: test_vmov_double_imm:
; CHECK-NONEON: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-NO-XO-LABEL: test_vmov_double_imm:
; CHECK-NO-XO: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-DOUBLE-LABEL: test_vmov_double_imm:
; CHECK-XO-DOUBLE: movs [[REG:r[0-9]+]], #0
; CHECK-XO-DOUBLE: vmov {{d[0-9]+}}, [[REG]], [[REG]]
; CHECK-XO-DOUBLE-NOT: vldr
; CHECK-XO-DOUBLE-BE-LABEL: test_vmov_double_imm:
; CHECK-XO-DOUBLE-BE: movs [[REG:r[0-9]+]], #0
; CHECK-XO-DOUBLE-BE: vmov {{d[0-9]+}}, [[REG]], [[REG]]
; CHECK-XO-DOUBLE-NOT: vldr
ret double 0.0
}
define arm_aapcs_vfpcc double @test_vmvn_double_imm() {
; CHECK-LABEL: test_vmvn_double_imm:
; CHECK: vmvn.i32 d0, #0xb0000000
; CHECK-NONEON-LABEL: test_vmvn_double_imm:
; CHECK-NONEON: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-NO-XO-LABEL: test_vmvn_double_imm:
; CHECK-NO-XO: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-DOUBLE-LABEL: test_vmvn_double_imm:
; CHECK-XO-DOUBLE: mvn [[REG:r[0-9]+]], #-1342177280
; CHECK-XO-DOUBLE: vmov {{d[0-9]+}}, [[REG]], [[REG]]
; CHECK-XO-DOUBLE-NOT: vldr
; CHECK-XO-DOUBLE-BE-LABEL: test_vmvn_double_imm:
; CHECK-XO-DOUBLE-BE: mvn [[REG:r[0-9]+]], #-1342177280
; CHECK-XO-DOUBLE-BE: vmov {{d[0-9]+}}, [[REG]], [[REG]]
; CHECK-XO-DOUBLE-BE-NOT: vldr
ret double 0x4fffffff4fffffff
}
; Make sure we don't ignore the high half of 64-bit values when deciding whether
; a vmov/vmvn is possible.
define arm_aapcs_vfpcc double @test_notvmvn_double_imm() {
; CHECK-LABEL: test_notvmvn_double_imm:
; CHECK: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-NONEON-LABEL: test_notvmvn_double_imm:
; CHECK-NONEON: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-NO-XO-LABEL: test_notvmvn_double_imm:
; CHECK-NO-XO: vldr d0, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-DOUBLE-LABEL: test_notvmvn_double_imm:
; CHECK-XO-DOUBLE: mvn [[REG1:r[0-9]+]], #-1342177280
; CHECK-XO-DOUBLE: mov.w [[REG2:r[0-9]+]], #-1
; CHECK-XO-DOUBLE: vmov {{d[0-9]+}}, [[REG2]], [[REG1]]
; CHECK-XO-DOUBLE-NOT: vldr
; CHECK-XO-DOUBLE-BE-LABEL: test_notvmvn_double_imm:
; CHECK-XO-DOUBLE-BE: mov.w [[REG1:r[0-9]+]], #-1
; CHECK-XO-DOUBLE-BE: mvn [[REG2:r[0-9]+]], #-1342177280
; CHECK-XO-DOUBLE-BE: vmov {{d[0-9]+}}, [[REG2]], [[REG1]]
; CHECK-XO-DOUBLE-BE-NOT: vldr
ret double 0x4fffffffffffffff
}
define arm_aapcs_vfpcc float @lower_const_f32_xo() {
; CHECK-NO-XO-LABEL: lower_const_f32_xo
; CHECK-NO-XO: vldr {{s[0-9]+}}, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-FLOAT-LABEL: lower_const_f32_xo
; CHECK-XO-FLOAT: movw [[REG:r[0-9]+]], #29884
; CHECK-XO-FLOAT: movt [[REG]], #16083
; CHECK-XO-FLOAT: vmov {{s[0-9]+}}, [[REG]]
; CHECK-XO-FLOAT-NOT: vldr
ret float 0x3FDA6E9780000000
}
define arm_aapcs_vfpcc double @lower_const_f64_xo() {
; CHECK-NO-XO-LABEL: lower_const_f64_xo
; CHECK-NO-XO: vldr {{d[0-9]+}}, {{.?LCPI[0-9]+_[0-9]+}}
; CHECK-XO-DOUBLE-LABEL: lower_const_f64_xo
; CHECK-XO-DOUBLE: movw [[REG1:r[0-9]+]], #6291
; CHECK-XO-DOUBLE: movw [[REG2:r[0-9]+]], #27263
; CHECK-XO-DOUBLE: movt [[REG1]], #16340
; CHECK-XO-DOUBLE: movt [[REG2]], #29884
; CHECK-XO-DOUBLE: vmov {{d[0-9]+}}, [[REG2]], [[REG1]]
; CHECK-XO-DOUBLE-NOT: vldr
; CHECK-XO-DOUBLE-BE-LABEL: lower_const_f64_xo
; CHECK-XO-DOUBLE-BE: movw [[REG1:r[0-9]+]], #27263
; CHECK-XO-DOUBLE-BE: movw [[REG2:r[0-9]+]], #6291
; CHECK-XO-DOUBLE-BE: movt [[REG1]], #29884
; CHECK-XO-DOUBLE-BE: movt [[REG2]], #16340
; CHECK-XO-DOUBLE-BE: vmov {{d[0-9]+}}, [[REG2]], [[REG1]]
; CHECK-XO-DOUBLE-BE-NOT: vldr
ret double 3.140000e-01
}
; This is a target independent optimization, performed by the
; DAG Combiner, which promotes floating point literals into
; constant pools:
;
; (a cond b) ? 1.0f : 2.0f -> load (ConstPoolAddr + ((a cond b) ? 0 : 4)
;
; We need to make sure that the constant pools are placed in
; the data section when generating execute-only code:
define arm_aapcs_vfpcc float @lower_fpconst_select(float %f) {
; CHECK-NO-XO-LABEL: lower_fpconst_select
; CHECK-NO-XO: adr [[REG:r[0-9]+]], [[LABEL:.?LCPI[0-9]+_[0-9]+]]
; CHECK-NO-XO: vldr {{s[0-9]+}}, {{[[]}}[[REG]]{{[]]}}
; CHECK-NO-XO-NOT: .rodata
; CHECK-NO-XO: [[LABEL]]:
; CHECK-NO-XO: .long 0x4f9502f9
; CHECK-NO-XO: .long 0x4dee6b28
; CHECK-XO-FLOAT-LABEL: lower_fpconst_select
; CHECK-XO-FLOAT: movw [[REG:r[0-9]+]], :lower16:[[LABEL:.?LCP[0-9]+_[0-9]+]]
; CHECK-XO-FLOAT: movt [[REG]], :upper16:[[LABEL]]
; CHECK-XO-FLOAT: vldr {{s[0-9]+}}, {{[[]}}[[REG]]{{[]]}}
; CHECK-XO-FLOAT: .rodata
; CHECK-XO-FLOAT-NOT: .text
; CHECK-XO-FLOAT: [[LABEL]]:
; CHECK-XO-FLOAT: .long 0x4f9502f9
; CHECK-XO-FLOAT: .long 0x4dee6b28
; CHECK-XO-ROPI-LABEL: lower_fpconst_select
; CHECK-XO-ROPI: movw [[REG:r[0-9]+]], :lower16:([[LABEL1:.?LCP[0-9]+_[0-9]+]]-([[LABEL2:.?LPC[0-9]+_[0-9]+]]+4))
; CHECK-XO-ROPI: movt [[REG]], :upper16:([[LABEL1]]-([[LABEL2]]+4))
; CHECK-XO-ROPI: [[LABEL2]]:
; CHECK-XO-ROPI: vldr {{s[0-9]+}}, {{[[]}}[[REG]]{{[]]}}
; CHECK-XO-ROPI: .rodata
; CHECK-XO-ROPI-NOT: .text
; CHECK-XO-ROPI: [[LABEL1]]:
; CHECK-XO-ROPI: .long 0x4f9502f9
; CHECK-XO-ROPI: .long 0x4dee6b28
%cmp = fcmp nnan oeq float %f, 0.000000e+00
%sel = select i1 %cmp, float 5.000000e+08, float 5.000000e+09
ret float %sel
}
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