[llvm] ae6db2f - Precommit test for D121483:
Kevin P. Neal via llvm-commits
llvm-commits at lists.llvm.org
Thu Mar 17 12:03:11 PDT 2022
Author: Kevin P. Neal
Date: 2022-03-17T15:03:05-04:00
New Revision: ae6db2f3d84985e5439cc95b2fc06946376293e8
URL: https://github.com/llvm/llvm-project/commit/ae6db2f3d84985e5439cc95b2fc06946376293e8
DIFF: https://github.com/llvm/llvm-project/commit/ae6db2f3d84985e5439cc95b2fc06946376293e8.diff
LOG: Precommit test for D121483:
[FPEnv][InstSimplify] Teach CannotBeNegativeZero() about constrained intrinsics.
Added:
llvm/test/Transforms/InstSimplify/strictfp-sqrt-nonneg.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/InstSimplify/strictfp-sqrt-nonneg.ll b/llvm/test/Transforms/InstSimplify/strictfp-sqrt-nonneg.ll
new file mode 100644
index 0000000000000..2e6d712783598
--- /dev/null
+++ b/llvm/test/Transforms/InstSimplify/strictfp-sqrt-nonneg.ll
@@ -0,0 +1,236 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
+
+;
+; Check constrained detection of cases where negative zero is impossible:
+;
+
+define float @nonneg_u_defaultenv(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_defaultenv(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0:[0-9]+]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+define float @nonneg_s_defaultenv(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_defaultenv(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+define float @nonneg_u_maytrap(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_maytrap(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
+ %sub = call nnan float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
+ ret float %sub
+}
+
+define float @nonneg_s_maytrap(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_maytrap(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
+ %sub = call nnan float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.maytrap") #0
+ ret float %sub
+}
+
+; NOTE: The fsub instruction is expected to remain, but the result isn't used.
+define float @nonneg_u_ebstrict(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_ebstrict(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
+ %sub = call nnan float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
+ ret float %sub
+}
+
+; NOTE: The fsub instruction is expected to remain, but the result isn't used.
+define float @nonneg_s_ebstrict(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_ebstrict(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
+ %sub = call nnan float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearest", metadata !"fpexcept.strict") #0
+ ret float %sub
+}
+
+; Test all the rounding modes. Exception handling shouldn't matter.
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_u_downward(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_downward(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.downward", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.downward", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.downward", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_s_downward(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_downward(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.downward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.downward", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.downward", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.downward", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_u_upward(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_upward(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.upward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.upward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.upward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.upward", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.upward", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.upward", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_s_upward(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_upward(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.upward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.upward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.upward", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.upward", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.upward", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.upward", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_u_towardzero(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_towardzero(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_s_towardzero(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_towardzero(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.towardzero", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.towardzero", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_u_tonearestaway(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_tonearestaway(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_s_tonearestaway(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_tonearestaway(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.tonearestaway", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_u_dynamic(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_u_dynamic(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 [[A:%.*]], metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.uitofp.f32.i32(i32 %a, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+; Negative test: should not fire due to rounding mode metadata.
+define float @nonneg_s_dynamic(i32 %a) #0 {
+; CHECK-LABEL: @nonneg_s_dynamic(
+; CHECK-NEXT: [[FPA:%.*]] = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 [[A:%.*]], metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SQRA:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[FPA]], metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[SQRA]], float -0.000000e+00, metadata !"round.dynamic", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT: ret float [[SUB]]
+;
+ %fpa = call float @llvm.experimental.constrained.sitofp.f32.i32(i32 %a, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
+ %sqra = call float @llvm.experimental.constrained.sqrt.f32(float %fpa, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
+ %sub = call float @llvm.experimental.constrained.fsub.f32(float %sqra, float -0.0, metadata !"round.dynamic", metadata !"fpexcept.ignore") #0
+ ret float %sub
+}
+
+declare float @llvm.experimental.constrained.sqrt.f32(float, metadata, metadata) #0
+declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata) #0
+
+declare float @llvm.experimental.constrained.sitofp.f32.i32(i32, metadata, metadata) #0
+declare float @llvm.experimental.constrained.uitofp.f32.i32(i32, metadata, metadata) #0
+
+attributes #0 = { strictfp }
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