forked from OSchip/llvm-project
39 lines
1.2 KiB
LLVM
39 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=aarch64-unknown-unknown | FileCheck %s
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; Test against PR36600: https://bugs.llvm.org/show_bug.cgi?id=36600
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; This is not fabs. If X = -0.0, it should return -0.0 not 0.0.
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define double @not_fabs(double %x) #0 {
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; CHECK-LABEL: not_fabs:
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; CHECK: // %bb.0:
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; CHECK-NEXT: fneg d1, d0
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; CHECK-NEXT: fcmp d0, #0.0
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; CHECK-NEXT: fcsel d0, d1, d0, le
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; CHECK-NEXT: ret
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%cmp = fcmp nnan ole double %x, 0.0
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%sub = fsub nnan double -0.0, %x
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%cond = select i1 %cmp, double %sub, double %x
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ret double %cond
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}
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; Try again with different type, predicate, and compare constant.
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define float @still_not_fabs(float %x) #0 {
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; CHECK-LABEL: still_not_fabs:
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; CHECK: // %bb.0:
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; CHECK-NEXT: adrp x8, .LCPI1_0
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; CHECK-NEXT: ldr s1, [x8, :lo12:.LCPI1_0]
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; CHECK-NEXT: fneg s2, s0
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; CHECK-NEXT: fcmp s0, s1
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; CHECK-NEXT: fcsel s0, s0, s2, ge
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; CHECK-NEXT: ret
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%cmp = fcmp nnan oge float %x, -0.0
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%sub = fsub nnan float -0.0, %x
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%cond = select i1 %cmp, float %x, float %sub
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ret float %cond
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}
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attributes #0 = { "no-nans-fp-math"="true" }
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