[ConstantFolding] Correctly handle failures in ConstantFoldConstantExpressionImpl
Failures in ConstantFoldConstantExpressionImpl were ignored causing
crashes down the line.
This fixes PR28725.
llvm-svn: 276827
diff --git a/llvm/test/Transforms/InstSimplify/pr28725.ll b/llvm/test/Transforms/InstSimplify/pr28725.ll
new file mode 100644
index 0000000..bc6b30a
--- /dev/null
+++ b/llvm/test/Transforms/InstSimplify/pr28725.ll
@@ -0,0 +1,14 @@
+; RUN: opt -S -instsimplify < %s | FileCheck %s
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+%S = type { i16, i32 }
+
+define <2 x i16> @test1() {
+entry:
+ %b = insertelement <2 x i16> <i16 undef, i16 0>, i16 extractvalue (%S select (i1 icmp eq (i16 extractelement (<2 x i16> bitcast (<1 x i32> <i32 1> to <2 x i16>), i32 0), i16 0), %S zeroinitializer, %S { i16 0, i32 1 }), 0), i32 0
+ ret <2 x i16> %b
+}
+
+; CHECK-LABEL: @test1(
+; CHECK: %[[ie:.*]] = insertelement <2 x i16> <i16 undef, i16 0>, i16 extractvalue (%S select (i1 icmp eq (i16 extractelement (<2 x i16> bitcast (<1 x i32> <i32 1> to <2 x i16>), i32 0), i16 0), %S zeroinitializer, %S { i16 0, i32 1 }), 0), i32 0
+; CHECK: ret <2 x i16> %[[ie]]