llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-llvm-support Author: Matt Arsenault (arsenm) <details> <summary>Changes</summary> Alive isn't particularly happy with this in the case where one of the inputs could be zero, but I think it's wrong: https://alive2.llvm.org/ce/z/dF7V6k nsz shouldn't permit introducing a -0 result where there wasn't one in the input here. --- Patch is 43.56 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/173898.diff 3 Files Affected: - (modified) llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp (+18-2) - (modified) llvm/test/Transforms/InstCombine/simplify-demanded-fpclass-maximum.ll (+30-30) - (modified) llvm/test/Transforms/InstCombine/simplify-demanded-fpclass-minimum.ll (+30-30) ``````````diff diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp index 762f7421631b3..588aeffff8a8d 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp @@ -2211,9 +2211,25 @@ Value *InstCombinerImpl::SimplifyDemandedUseFPClass(Value *V, auto *FPOp = cast<FPMathOperator>(CI); bool ChangedFlags = false; + if (!FPOp->hasNoSignedZeros()) { + // Add NSZ flag if we know the result will not be sensitive on the sign + // of 0. + FPClassTest ZeroMask = fcZero; + + if (Mode != DenormalMode::getIEEE()) + ZeroMask |= fcSubnormal; + + bool ResultNotLogical0 = (ValidResults & ZeroMask) == fcNone; + if (ResultNotLogical0 || + ((KnownLHS.isKnownNeverLogicalNegZero(Mode) || + KnownRHS.isKnownNeverLogicalPosZero(Mode)) && + (KnownLHS.isKnownNeverLogicalPosZero(Mode) || + KnownRHS.isKnownNeverLogicalNegZero(Mode)))) { + CI->setHasNoSignedZeros(true); + ChangedFlags = true; + } + } - // TODO: Add NSZ flag if we know the result will not be sensitive on the - // sign of 0. if (!FPOp->hasNoNaNs() && (ValidResults & fcNan) == fcNone) { CI->setHasNoNaNs(true); ChangedFlags = true; diff --git a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass-maximum.ll b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass-maximum.ll index b7c41ff6c3c64..9a81edbf06b96 100644 --- a/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass-maximum.ll +++ b/llvm/test/Transforms/InstCombine/simplify-demanded-fpclass-maximum.ll @@ -34,7 +34,7 @@ define nofpclass(inf norm sub zero) float @ret_only_nan(float %x, float %y) { define nofpclass(inf norm sub zero qnan) float @ret_only_snan(float %x, float %y) { ; CHECK-LABEL: define nofpclass(qnan inf zero sub norm) float @ret_only_snan( ; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[X]], float [[Y]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[X]], float [[Y]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %x, float %y) @@ -44,7 +44,7 @@ define nofpclass(inf norm sub zero qnan) float @ret_only_snan(float %x, float %y define nofpclass(inf norm sub zero snan) float @ret_only_qnan(float %x, float %y) { ; CHECK-LABEL: define nofpclass(snan inf zero sub norm) float @ret_only_qnan( ; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[X]], float [[Y]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[X]], float [[Y]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %x, float %y) @@ -54,7 +54,7 @@ define nofpclass(inf norm sub zero snan) float @ret_only_qnan(float %x, float %y define nofpclass(nan norm sub zero) float @ret_only_inf(float %x, float %y) { ; CHECK-LABEL: define nofpclass(nan zero sub norm) float @ret_only_inf( ; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call nnan float @llvm.maximum.f32(float [[X]], float [[Y]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nnan nsz float @llvm.maximum.f32(float [[X]], float [[Y]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %x, float %y) @@ -364,7 +364,7 @@ define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_1() define nofpclass(nsub) float @lhs_must_be_pinf_or_nan(float %unknown, float nofpclass(ninf norm zero sub) %must.be.pinf.or.nan) { ; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_pinf_or_nan( ; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(ninf zero sub norm) [[MUST_BE_PINF_OR_NAN:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[MUST_BE_PINF_OR_NAN]], float [[UNKNOWN]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[MUST_BE_PINF_OR_NAN]], float [[UNKNOWN]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %must.be.pinf.or.nan, float %unknown) @@ -374,7 +374,7 @@ define nofpclass(nsub) float @lhs_must_be_pinf_or_nan(float %unknown, float nofp define nofpclass(nsub) float @rhs_must_be_pinf_or_nan(float nofpclass(ninf norm zero sub) %must.be.pinf.or.nan, float %unknown) { ; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_pinf_or_nan( ; CHECK-SAME: float nofpclass(ninf zero sub norm) [[MUST_BE_PINF_OR_NAN:%.*]], float [[UNKNOWN:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN]], float [[MUST_BE_PINF_OR_NAN]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN]], float [[MUST_BE_PINF_OR_NAN]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown, float %must.be.pinf.or.nan) @@ -384,7 +384,7 @@ define nofpclass(nsub) float @rhs_must_be_pinf_or_nan(float nofpclass(ninf norm define nofpclass(nsub) float @lhs_must_be_pinf(float %unknown, float nofpclass(nan ninf norm zero sub) %must.be.pinf) { ; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_pinf( ; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(nan ninf zero sub norm) [[MUST_BE_PINF:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN]], float 0x7FF0000000000000) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN]], float 0x7FF0000000000000) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %must.be.pinf, float %unknown) @@ -394,7 +394,7 @@ define nofpclass(nsub) float @lhs_must_be_pinf(float %unknown, float nofpclass(n define nofpclass(nsub) float @rhs_must_be_pinf(float nofpclass(nan ninf norm zero sub) %must.be.pinf, float %unknown) { ; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_pinf( ; CHECK-SAME: float nofpclass(nan ninf zero sub norm) [[MUST_BE_PINF:%.*]], float [[UNKNOWN:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN]], float 0x7FF0000000000000) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN]], float 0x7FF0000000000000) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown, float %must.be.pinf) @@ -424,7 +424,7 @@ define nofpclass(nsub) float @rhs_must_be_pinf_lhs_non_nan(float nofpclass(nan n define nofpclass(nsub) float @lhs_must_be_ninf_or_nan(float %unknown, float nofpclass(pinf norm zero sub) %must.be.ninf.or.nan) { ; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_ninf_or_nan( ; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(pinf zero sub norm) [[MUST_BE_NINF_OR_NAN:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[MUST_BE_NINF_OR_NAN]], float [[UNKNOWN]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[MUST_BE_NINF_OR_NAN]], float [[UNKNOWN]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %must.be.ninf.or.nan, float %unknown) @@ -434,7 +434,7 @@ define nofpclass(nsub) float @lhs_must_be_ninf_or_nan(float %unknown, float nofp define nofpclass(nsub) float @rhs_must_be_ninf_or_nan(float nofpclass(pinf norm zero sub) %must.be.ninf.or.nan, float %unknown) { ; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_ninf_or_nan( ; CHECK-SAME: float nofpclass(pinf zero sub norm) [[MUST_BE_NINF_OR_NAN:%.*]], float [[UNKNOWN:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN]], float [[MUST_BE_NINF_OR_NAN]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN]], float [[MUST_BE_NINF_OR_NAN]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown, float %must.be.ninf.or.nan) @@ -503,7 +503,7 @@ define nofpclass(pzero) float @result_not_pzero(float %unknown0, float %unknown1 define nofpclass(zero) float @result_not_zero(float %unknown0, float %unknown1) { ; CHECK-LABEL: define nofpclass(zero) float @result_not_zero( ; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown0, float %unknown1) @@ -533,7 +533,7 @@ define nofpclass(zero) float @result_not_zero__dynamic(float %unknown0, float %u define nofpclass(zero) float @result_not_zero_or_sub(float %unknown0, float %unknown1) { ; CHECK-LABEL: define nofpclass(zero) float @result_not_zero_or_sub( ; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown0, float %unknown1) @@ -543,7 +543,7 @@ define nofpclass(zero) float @result_not_zero_or_sub(float %unknown0, float %unk define nofpclass(zero sub) float @result_not_zero_or_sub__daz(float %unknown0, float %unknown1) #0 { ; CHECK-LABEL: define nofpclass(zero sub) float @result_not_zero_or_sub__daz( ; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) #[[ATTR0]] { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown0, float %unknown1) @@ -553,7 +553,7 @@ define nofpclass(zero sub) float @result_not_zero_or_sub__daz(float %unknown0, f define nofpclass(zero sub) float @result_not_zero_or_sub__dynamic(float %unknown0, float %unknown1) #1 { ; CHECK-LABEL: define nofpclass(zero sub) float @result_not_zero_or_sub__dynamic( ; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) #[[ATTR1]] { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown0, float %unknown1) @@ -563,7 +563,7 @@ define nofpclass(zero sub) float @result_not_zero_or_sub__dynamic(float %unknown define nofpclass(snan) float @lhs_not_zero(float nofpclass(zero) %not.zero, float %unknown) { ; CHECK-LABEL: define nofpclass(snan) float @lhs_not_zero( ; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO:%.*]], float [[UNKNOWN:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_ZERO]], float [[UNKNOWN]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_ZERO]], float [[UNKNOWN]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.zero, float %unknown) @@ -573,7 +573,7 @@ define nofpclass(snan) float @lhs_not_zero(float nofpclass(zero) %not.zero, floa define nofpclass(snan) float @rhs_not_zero(float %unknown, float nofpclass(zero) %not.zero) { ; CHECK-LABEL: define nofpclass(snan) float @rhs_not_zero( ; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(zero) [[NOT_ZERO:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[UNKNOWN]], float [[NOT_ZERO]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[UNKNOWN]], float [[NOT_ZERO]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %unknown, float %not.zero) @@ -583,7 +583,7 @@ define nofpclass(snan) float @rhs_not_zero(float %unknown, float nofpclass(zero) define nofpclass(snan) float @sources_not_zero(float nofpclass(zero) %not.zero0, float nofpclass(zero) %not.zero1) { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero( ; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO0:%.*]], float nofpclass(zero) [[NOT_ZERO1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.zero0, float %not.zero1) @@ -603,7 +603,7 @@ define nofpclass(snan) float @sources_not_zero__daz(float nofpclass(zero) %not.z define nofpclass(snan) float @sources_not_zero__dynamic(float nofpclass(zero) %not.zero0, float nofpclass(zero) %not.zero1) #2 { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero__dynamic( ; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO0:%.*]], float nofpclass(zero) [[NOT_ZERO1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.zero0, float %not.zero1) @@ -613,7 +613,7 @@ define nofpclass(snan) float @sources_not_zero__dynamic(float nofpclass(zero) %n define nofpclass(snan) float @sources_not_zero_or_sub(float nofpclass(zero sub) %not.zero.sub.0, float nofpclass(zero sub) %not.zero.sub.1) { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero_or_sub( ; CHECK-SAME: float nofpclass(zero sub) [[NOT_ZERO_SUB_0:%.*]], float nofpclass(zero sub) [[NOT_ZERO_SUB_1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.zero.sub.0, float %not.zero.sub.1) @@ -623,7 +623,7 @@ define nofpclass(snan) float @sources_not_zero_or_sub(float nofpclass(zero sub) define nofpclass(snan) float @sources_not_zero_or_sub__daz(float nofpclass(zero sub) %not.zero.sub.0, float nofpclass(zero sub) %not.zero.sub.1) #1 { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero_or_sub__daz( ; CHECK-SAME: float nofpclass(zero sub) [[NOT_ZERO_SUB_0:%.*]], float nofpclass(zero sub) [[NOT_ZERO_SUB_1:%.*]]) #[[ATTR1]] { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.zero.sub.0, float %not.zero.sub.1) @@ -633,7 +633,7 @@ define nofpclass(snan) float @sources_not_zero_or_sub__daz(float nofpclass(zero define nofpclass(snan) float @sources_not_zero_or_sub__dynamic(float nofpclass(zero sub) %not.zero.sub.0, float nofpclass(zero sub) %not.zero.sub.1) #2 { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero_or_sub__dynamic( ; CHECK-SAME: float nofpclass(zero sub) [[NOT_ZERO_SUB_0:%.*]], float nofpclass(zero sub) [[NOT_ZERO_SUB_1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.zero.sub.0, float %not.zero.sub.1) @@ -643,7 +643,7 @@ define nofpclass(snan) float @sources_not_zero_or_sub__dynamic(float nofpclass(z define nofpclass(snan) float @sources_not_nzero(float nofpclass(nzero) %not.nzero0, float nofpclass(nzero) %not.nzero1) { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_nzero( ; CHECK-SAME: float nofpclass(nzero) [[NOT_NZERO0:%.*]], float nofpclass(nzero) [[NOT_NZERO1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.nzero0, float %not.nzero1) @@ -653,7 +653,7 @@ define nofpclass(snan) float @sources_not_nzero(float nofpclass(nzero) %not.nzer define nofpclass(snan) float @sources_not_pzero(float nofpclass(pzero) %not.pzero0, float nofpclass(pzero) %not.pzero1) { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_pzero( ; CHECK-SAME: float nofpclass(pzero) [[NOT_PZERO0:%.*]], float nofpclass(pzero) [[NOT_PZERO1:%.*]]) { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_PZERO0]], float [[NOT_PZERO1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_PZERO0]], float [[NOT_PZERO1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.pzero0, float %not.pzero1) @@ -723,7 +723,7 @@ define nofpclass(snan) float @rhs_not_nzero_lhs_not_pzero__dynamic(float nofpcla define nofpclass(snan) float @sources_not_nzero_nsub__dynamic(float nofpclass(nzero nsub) %not.nzero0, float nofpclass(nzero nsub) %not.nzero1) #1 { ; CHECK-LABEL: define nofpclass(snan) float @sources_not_nzero_nsub__dynamic( ; CHECK-SAME: float nofpclass(nzero nsub) [[NOT_NZERO0:%.*]], float nofpclass(nzero nsub) [[NOT_NZERO1:%.*]]) #[[ATTR1]] { -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]]) ; CHECK-NEXT: ret float [[RESULT]] ; %result = call float @llvm.maximum.f32(float %not.nzero0, float %not.nzero1) @@ -916,7 +916,7 @@ define nofpclass(snan) float @known_positive__maximum__only_pzero() { ; CHECK-LABEL: define nofpclass(snan) float @known_positive__maximum__only_pzero() { ; CHECK-NEXT: [[KNOWN_POSITIVE:%.*]] = call float @returns_positive() ; CHECK-NEXT: [[KNOWN_PZERO:%.*]] = call float @returns_pzero() -; CHECK-NEXT: [[RESULT:%.*]] = call nnan float @llvm.maximum.f32(float [[KNOWN_POSITIVE]], float 0.000000e+00) +; CHECK-NEXT: [[RESULT:%.*]] = call nnan nsz float @llvm.maximum.f32(float [[KNOWN_POSITIVE]], float 0.000000e+00) ; CHECK-NEXT: ret float [[RESULT]] ; %known.positive = call float @returns_positive() @@ -929,7 +929,7 @@ define nofpclass(snan) float @only_pzero__maximum__known_positive() { ; CHECK-LABEL: define nofpclass(snan) float @only_pzero__maximum__known_positive() { ; CHECK-NEXT: [[KNOWN_PZERO:%.*]] = call float @returns_pzero() ; CHECK-NEXT: [[KNOWN_POSITIVE:%.*]] = call float @returns_positive() -; CHECK-NEXT: [[RESULT:%.*]] = call nnan float @llvm.maximum.f32(float [[KNOWN_POSITIVE]], float 0.000000e+00) +; CHECK-NEXT: [[RESULT:%.*]] = call nnan nsz float @llvm.maximum.f32(float [[KNOWN_POSITIVE]], float 0.000000e+00) ; CHECK-NEXT: ret float [[RESULT]] ; %known.pzero = call float @returns_pzero() @@ -1018,7 +1018,7 @@ define nofpclass(snan) float @known_negative__maximum__only_nzero_or_nan() { ; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximum__only_nzero_or_nan() { ; CHECK-NEXT: [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative() ; CHECK-NEXT: [[KNOWN_NZERO_OR_NAN:%.*]] = call float @returns_nzero_or_nan() -; CHECK-NEXT: [[RESULT:%.*]] = call float @llvm.maximum.f32(float [[KNOWN_NEGATIVE]], float [[KNOWN_NZERO_OR_NAN]]) +; CHECK-NEXT: [[RESULT:%.*]] = call nsz float @llvm.maximum.f32(float [[KNOWN_NEGATIVE]], float [[KNOWN_NZERO_OR_NAN]]) ; CHECK-NEXT: ret float [[RESULT]] ; %known.negative = call float @returns_negative() @@ -1031,7 +1031,7 @@ define nofpclass(snan) float @only_nzero_or_nan__maximum__known_negative() { ; CHECK-LABEL: define nofpclass(snan) float @only_nzero_or_nan__maximum__known_negative() { ; CHECK-NEXT: [[KNOWN_NZERO_O... [truncated] `````````` </details> https://github.com/llvm/llvm-project/pull/173898 _______________________________________________ llvm-branch-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
