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Instruction abs.[ds] is not generating correct result when working with NaNs for revisions prior mips32r6 and mips64r6. To generate a sequence which always produce a correct result, but also to allow user more control on how his code is compiled, attribute +abs2008 is added, so user can choose legacy or 2008. By default legacy mode is used on revisions prior R6. Mips32r6 and mips64r6 use abs2008 mode by default. Differential Revision: https://reviews.llvm.org/D35983 llvm-svn: 352370
102 lines
4.7 KiB
LLVM
102 lines
4.7 KiB
LLVM
; Check that abs.[ds] is only selected for mips32r6 or mips64r6 when no
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; additional options are passed. For revisions prior mips32r6 and mips64r6,
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; abs.[ds] does not generate the correct result when working with NaNs, and
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; should be explicitly enabled with -enable-no-nans-fp-math or +abs2008 options.
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; In 1985 mode, abs.[ds] are arithmetic (i.e. they raise invalid operation
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; exceptions when given NaN's). In 2008 mode, they are non-arithmetic (i.e.
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; they are copies and don't raise any exceptions).
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; Testing default values
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips64el-linux-gnu -mcpu=mips64 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32r2 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips64el-linux-gnu -mcpu=mips64r2 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32r6 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips64el-linux-gnu -mcpu=mips64r6 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips64-linux-gnu -mcpu=mips64 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32r2 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips64-linux-gnu -mcpu=mips64r2 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32r6 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips64-linux-gnu -mcpu=mips64r6 | FileCheck %s \
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; RUN: -check-prefix=CHECK-ABS2008
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; Testing non-default values
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32r2 -mattr=+abs2008 \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips64el-linux-gnu -mcpu=mips64r2 -mattr=+abs2008 \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32r2 -mattr=+abs2008 \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips64-linux-gnu -mcpu=mips64r2 -mattr=+abs2008 \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABS2008
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; Testing -enable-no-nans-fp-math
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32 \
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; RUN: -enable-no-nans-fp-math | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips64el-linux-gnu -mcpu=mips64 \
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; RUN: -enable-no-nans-fp-math | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32 \
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; RUN: -enable-no-nans-fp-math | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips64-linux-gnu -mcpu=mips64 \
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; RUN: -enable-no-nans-fp-math | FileCheck %s -check-prefix=CHECK-ABS2008
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; microMIPS
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; Testing default values
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32 -mattr=+micromips \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32r2 -mattr=+micromips \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32 -mattr=+micromips \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABSLEGACY
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32r2 -mattr=+micromips \
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; RUN: | FileCheck %s -check-prefix=CHECK-ABSLEGACY
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; Testing non-default values
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32r2 \
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; RUN: -mattr=+abs2008,+micromips | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32r2 \
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; RUN: -mattr=+abs2008,+micromips | FileCheck %s -check-prefix=CHECK-ABS2008
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; Testing -enable-no-nans-fp-math
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; RUN: llc < %s -mtriple=mipsel-linux-gnu -mcpu=mips32 -mattr=+micromips \
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; RUN: -enable-no-nans-fp-math | FileCheck %s -check-prefix=CHECK-ABS2008
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; RUN: llc < %s -mtriple=mips-linux-gnu -mcpu=mips32 -mattr=+micromips \
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; RUN: -enable-no-nans-fp-math | FileCheck %s -check-prefix=CHECK-ABS2008
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define float @foo0(float %a) nounwind readnone {
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entry:
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; CHECK-LABEL: foo0
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; CHECK-ABS2008: abs.s
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; CHECK-ABSLEGACY: {{(ori|ins)}}
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; CHECK-ABSLEGACY-NOT: abs.s
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%call = tail call float @fabsf(float %a) nounwind readnone
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ret float %call
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}
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declare float @fabsf(float) nounwind readnone
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define double @foo1(double %a) nounwind readnone {
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entry:
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; CHECK-LABEL: foo1:
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; CHECK-ABS2008: abs.d
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; CHECK-ABSLEGACY: {{(ori|ins|dsll)}}
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; CHECK-ABSLEGACY-NOT: abs.d
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%call = tail call double @fabs(double %a) nounwind readnone
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ret double %call
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}
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declare double @fabs(double) nounwind readnone
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