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7ed143a4a1
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
40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-darwin | FileCheck %s
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; CHECK-LABEL: LCPI0_0:
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; CHECK-NEXT: .long 0xff800000
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; CHECK-LABEL: LCPI0_1:
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; CHECK-NEXT: .long 0x7f800000
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define x86_fp80 @foo(x86_fp80 %a) {
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; CHECK-LABEL: foo:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: fldt {{[0-9]+}}(%rsp)
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; CHECK-NEXT: fstpt -{{[0-9]+}}(%rsp)
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; CHECK-NEXT: testb $-128, -{{[0-9]+}}(%rsp)
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; CHECK-NEXT: flds {{.*}}(%rip)
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; CHECK-NEXT: flds {{.*}}(%rip)
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; CHECK-NEXT: fcmovne %st(1), %st
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; CHECK-NEXT: fstp %st(1)
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; CHECK-NEXT: retq
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%1 = tail call x86_fp80 @copysignl(x86_fp80 0xK7FFF8000000000000000, x86_fp80 %a) nounwind readnone
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ret x86_fp80 %1
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}
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declare x86_fp80 @copysignl(x86_fp80, x86_fp80) nounwind readnone
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; This would crash:
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; https://llvm.org/bugs/show_bug.cgi?id=26070
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define float @pr26070() {
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; CHECK-LABEL: pr26070:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: retq
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%c = call float @copysignf(float 1.0, float undef) readnone
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ret float %c
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}
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declare float @copysignf(float, float)
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