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[InstSimplify] add tests for fcmp folds; NFC 

This is part of a problem noted in PR39475:
https://bugs.llvm.org/show_bug.cgi?id=39475

llvm-svn: 345615
This commit is contained in:
Sanjay Patel 2018-10-30 16:58:43 +00:00
parent 634820d414
commit bcde5afcac
1 changed files with 73 additions and 2 deletions
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75
llvm/test/Transforms/InstSimplify/floating-point-compare.ll
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@ -234,15 +234,86 @@ define i1 @orderedLessZeroPowi(double,double) {
ret i1 %olt
}
define i1 @orderedLessZeroUIToFP(i32) {
define i1 @orderedLessZeroUIToFP(i32 %x) {
; CHECK-LABEL: @orderedLessZeroUIToFP(
; CHECK-NEXT: ret i1 true
;
%a = uitofp i32 %0 to float
%a = uitofp i32 %x to float
%uge = fcmp uge float %a, 0.000000e+00
ret i1 %uge
}
define <2 x i1> @orderedLessZeroUIToFP_vec(<2 x i32> %x) {
; CHECK-LABEL: @orderedLessZeroUIToFP_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%a = uitofp <2 x i32> %x to <2 x float>
%uge = fcmp uge <2 x float> %a, zeroinitializer
ret <2 x i1> %uge
}
define i1 @orderedLessZeroUIToFP_nnan(i32 %x) {
; CHECK-LABEL: @orderedLessZeroUIToFP_nnan(
; CHECK-NEXT: [[A:%.*]] = uitofp i32 [[X:%.*]] to float
; CHECK-NEXT: [[UGE:%.*]] = fcmp nnan oge float [[A]], 0.000000e+00
; CHECK-NEXT: ret i1 [[UGE]]
;
%a = uitofp i32 %x to float
%uge = fcmp nnan oge float %a, 0.000000e+00
ret i1 %uge
}
define <2 x i1> @orderedLessZeroUIToFP_nnan_vec(<2 x i32> %x) {
; CHECK-LABEL: @orderedLessZeroUIToFP_nnan_vec(
; CHECK-NEXT: [[A:%.*]] = uitofp <2 x i32> [[X:%.*]] to <2 x float>
; CHECK-NEXT: [[UGE:%.*]] = fcmp nnan oge <2 x float> [[A]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[UGE]]
;
%a = uitofp <2 x i32> %x to <2 x float>
%uge = fcmp nnan oge <2 x float> %a, zeroinitializer
ret <2 x i1> %uge
}
define i1 @fabs_is_nan_or_positive_or_zero(double %x) {
; CHECK-LABEL: @fabs_is_nan_or_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%fabs = tail call double @llvm.fabs.f64(double %x)
%cmp = fcmp uge double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_is_nan_or_positive_or_zero_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_is_nan_or_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp uge <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @fabs_nnan_is_positive_or_zero(double %x) {
; CHECK-LABEL: @fabs_nnan_is_positive_or_zero(
; CHECK-NEXT: [[FABS:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]])
; CHECK-NEXT: [[CMP:%.*]] = fcmp nnan oge double [[FABS]], 0.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%fabs = tail call double @llvm.fabs.f64(double %x)
%cmp = fcmp nnan oge double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_nnan_is_positive_or_zero_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_nnan_is_positive_or_zero_vec(
; CHECK-NEXT: [[FABS:%.*]] = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> [[X:%.*]])
; CHECK-NEXT: [[CMP:%.*]] = fcmp nnan oge <2 x double> [[FABS]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[CMP]]
;
%fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp nnan oge <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @orderedLessZeroSelect(float, float) {
; CHECK-LABEL: @orderedLessZeroSelect(
; CHECK-NEXT: ret i1 true