From: Kevin P. Neal <kevin.neal@sas.com>
Date: Thu, 17 Mar 2022 19:01:12 +0000 (-0400)
Subject: Precommit test for D121483:
X-Git-Tag: upstream/15.0.7~13226
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ae6db2f3d84985e5439cc95b2fc06946376293e8;p=platform%2Fupstream%2Fllvm.git

Precommit test for D121483:
[FPEnv][InstSimplify] Teach CannotBeNegativeZero() about constrained intrinsics.
---

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 0000000..2e6d712
--- /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 }