Value *B = getOrCreateVectorValue(Cmp->getOperand(1), Part);
Value *C = nullptr;
if (FCmp) {
+ // Propagate fast math flags.
+ IRBuilder<>::FastMathFlagGuard FMFG(Builder);
+ Builder.setFastMathFlags(Cmp->getFastMathFlags());
C = Builder.CreateFCmp(Cmp->getPredicate(), A, B);
- cast<FCmpInst>(C)->copyFastMathFlags(Cmp);
} else {
C = Builder.CreateICmp(Cmp->getPredicate(), A, B);
}
--- /dev/null
+; RUN: opt -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s
+
+; Avoid crashing while trying to vectorize fcmp that can be folded to vector of
+; i1 true.
+define void @test1() {
+; CHECK-LABEL: test1(
+; CHECK-LABEL: vector.body:
+; CHECK-NEXT: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
+; CHECK-NEXT: %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %index, i32 0
+; CHECK: %induction = add <4 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3>
+; CHECK: %index.next = add i32 %index, 4
+
+entry:
+ br label %loop
+
+loop: ; preds = %loop, %entry
+ %iv = phi i32 [ 0, %entry ], [ %ivnext, %loop ]
+ %fcmp = fcmp uno float 0.000000e+00, 0.000000e+00
+ %ivnext = add nsw i32 %iv, 1
+ %cnd = icmp sgt i32 %iv, 142
+ br i1 %cnd, label %exit, label %loop
+
+exit: ; preds = %loop
+ ret void
+}