[llvm] 1f33122 - [strictfp][IPSCCP] Precommit tests for D115737.

Kevin P. Neal via llvm-commits llvm-commits at lists.llvm.org
Thu Jun 16 08:23:43 PDT 2022


Author: Kevin P. Neal
Date: 2022-06-16T11:23:31-04:00
New Revision: 1f331224fb17dd01783a7a81dedc918873438d22

URL: https://github.com/llvm/llvm-project/commit/1f331224fb17dd01783a7a81dedc918873438d22
DIFF: https://github.com/llvm/llvm-project/commit/1f331224fb17dd01783a7a81dedc918873438d22.diff

LOG: [strictfp][IPSCCP] Precommit tests for D115737.

Added: 
    llvm/test/Transforms/SCCP/strictfp-phis-fcmp.ll
    llvm/test/Transforms/SCCP/strictfp-phis-fcmps.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/SCCP/strictfp-phis-fcmp.ll b/llvm/test/Transforms/SCCP/strictfp-phis-fcmp.ll
new file mode 100644
index 0000000000000..cb052f653dea7
--- /dev/null
+++ b/llvm/test/Transforms/SCCP/strictfp-phis-fcmp.ll
@@ -0,0 +1,308 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=sccp -S | FileCheck %s
+
+define i1 @float.1.defaultenv(i1 %cmp) #0 {
+; CHECK-LABEL: @float.1.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float 1.000000e+00, float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.ignore") #[[ATTR0:[0-9]+]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.ignore") #0
+
+  ret i1 %c
+}
+
+define i1 @float.1.maytrap(i1 %cmp) #0 {
+; CHECK-LABEL: @float.1.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float 1.000000e+00, float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.maytrap") #0
+
+  ret i1 %c
+}
+
+define i1 @float.1.strict(i1 %cmp) #0 {
+; CHECK-LABEL: @float.1.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float 1.000000e+00, float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.strict") #0
+
+  ret i1 %c
+}
+
+define i1 @float.2.defaultenv(i1 %cmp) #0 {
+; CHECK-LABEL: @float.2.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ 2.000000e+00, [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.ignore") #0
+  ret i1 %c
+}
+
+define i1 @float.2.maytrap(i1 %cmp) #0 {
+; CHECK-LABEL: @float.2.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ 2.000000e+00, [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.maytrap") #0
+  ret i1 %c
+}
+
+define i1 @float.2.strict(i1 %cmp) #0 {
+; CHECK-LABEL: @float.2.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ 2.000000e+00, [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.strict") #0
+  ret i1 %c
+}
+
+define i1 @float.3.defaultenv(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.3.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ [[F:%.*]], [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ %f, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.ignore") #0
+  ret i1 %c
+}
+
+define i1 @float.3.maytrap(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.3.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ [[F:%.*]], [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ %f, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.maytrap") #0
+  ret i1 %c
+}
+
+define i1 @float.3.strict(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.3.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ [[F:%.*]], [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ %f, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.strict") #0
+  ret i1 %c
+}
+
+define i1 @float.4_unreachable.defaultenv(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.4_unreachable.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       dead:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float 1.000000e+00, float 1.000000e+00, metadata !"une", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+dead:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"une", metadata !"fpexcept.ignore") #0
+  ret i1 %c
+}
+
+define i1 @float.4_unreachable.maytrap(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.4_unreachable.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       dead:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float 1.000000e+00, float 1.000000e+00, metadata !"une", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+dead:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"une", metadata !"fpexcept.maytrap") #0
+  ret i1 %c
+}
+
+; FIXME: It's a shame we can't eliminate this fcmp here:
+define i1 @float.4_unreachable.strict(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.4_unreachable.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       dead:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f32(float 1.000000e+00, float 1.000000e+00, metadata !"une", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+dead:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
+  %c = call i1 @llvm.experimental.constrained.fcmp.i1.f32(float %p, float 1.0, metadata !"une", metadata !"fpexcept.strict") #0
+  ret i1 %c
+}
+
+attributes #0 = { strictfp }
+
+declare i1 @llvm.experimental.constrained.fcmp.i1.f32(float, float, metadata, metadata)
+

diff  --git a/llvm/test/Transforms/SCCP/strictfp-phis-fcmps.ll b/llvm/test/Transforms/SCCP/strictfp-phis-fcmps.ll
new file mode 100644
index 0000000000000..1c90082262cbd
--- /dev/null
+++ b/llvm/test/Transforms/SCCP/strictfp-phis-fcmps.ll
@@ -0,0 +1,308 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=sccp -S | FileCheck %s
+
+define i1 @float.1.defaultenv(i1 %cmp) #0 {
+; CHECK-LABEL: @float.1.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float 1.000000e+00, float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.ignore") #[[ATTR0:[0-9]+]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.ignore") #0
+
+  ret i1 %c
+}
+
+define i1 @float.1.maytrap(i1 %cmp) #0 {
+; CHECK-LABEL: @float.1.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float 1.000000e+00, float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.maytrap") #0
+
+  ret i1 %c
+}
+
+define i1 @float.1.strict(i1 %cmp) #0 {
+; CHECK-LABEL: @float.1.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float 1.000000e+00, float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.strict") #0
+
+  ret i1 %c
+}
+
+define i1 @float.2.defaultenv(i1 %cmp) #0 {
+; CHECK-LABEL: @float.2.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ 2.000000e+00, [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.ignore") #0
+  ret i1 %c
+}
+
+define i1 @float.2.maytrap(i1 %cmp) #0 {
+; CHECK-LABEL: @float.2.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ 2.000000e+00, [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.maytrap") #0
+  ret i1 %c
+}
+
+define i1 @float.2.strict(i1 %cmp) #0 {
+; CHECK-LABEL: @float.2.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ 2.000000e+00, [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.strict") #0
+  ret i1 %c
+}
+
+define i1 @float.3.defaultenv(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.3.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ [[F:%.*]], [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ %f, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.ignore") #0
+  ret i1 %c
+}
+
+define i1 @float.3.maytrap(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.3.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ [[F:%.*]], [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ %f, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.maytrap") #0
+  ret i1 %c
+}
+
+define i1 @float.3.strict(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.3.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[P:%.*]] = phi float [ 1.000000e+00, [[ENTRY:%.*]] ], [ [[F:%.*]], [[IF_TRUE]] ]
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float [[P]], float 1.000000e+00, metadata !"ueq", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ %f, %if.true]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"ueq", metadata !"fpexcept.strict") #0
+  ret i1 %c
+}
+
+define i1 @float.4_unreachable.defaultenv(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.4_unreachable.defaultenv(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       dead:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float 1.000000e+00, float 1.000000e+00, metadata !"une", metadata !"fpexcept.ignore") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+dead:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"une", metadata !"fpexcept.ignore") #0
+  ret i1 %c
+}
+
+define i1 @float.4_unreachable.maytrap(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.4_unreachable.maytrap(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       dead:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float 1.000000e+00, float 1.000000e+00, metadata !"une", metadata !"fpexcept.maytrap") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+dead:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"une", metadata !"fpexcept.maytrap") #0
+  ret i1 %c
+}
+
+; FIXME: It's a shame we can't eliminate this fcmps here:
+define i1 @float.4_unreachable.strict(float %f, i1 %cmp) #0 {
+; CHECK-LABEL: @float.4_unreachable.strict(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]]
+; CHECK:       if.true:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       dead:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f32(float 1.000000e+00, float 1.000000e+00, metadata !"une", metadata !"fpexcept.strict") #[[ATTR0]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+
+entry:
+  br i1 %cmp, label %if.true, label %end
+
+if.true:
+  br label %end
+
+dead:
+  br label %end
+
+end:
+  %p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
+  %c = call i1 @llvm.experimental.constrained.fcmps.i1.f32(float %p, float 1.0, metadata !"une", metadata !"fpexcept.strict") #0
+  ret i1 %c
+}
+
+attributes #0 = { strictfp }
+
+declare i1 @llvm.experimental.constrained.fcmps.i1.f32(float, float, metadata, metadata)
+


        


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