We are not able to bitcast a pointer to an integral value.

Two return types are not equivalent if one is a pointer and the other is an
integral. This is because we cannot bitcast a pointer to an integral value.
PR15185


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179569 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 46 insertions, 0 deletions

diff --git a/test/Transforms/MergeFunc/crash.ll b/test/Transforms/MergeFunc/crash.ll
new file mode 100644
index 0000000..0897ba2
--- /dev/null
+++ b/test/Transforms/MergeFunc/crash.ll
@@ -0,0 +1,46 @@
+; RUN: opt -mergefunc -disable-output < %s
+; PR15185
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
+target triple = "i386-pc-linux-gnu"
+
+%.qux.2496 = type { i32, %.qux.2497 }
+%.qux.2497 = type { i8, i32 }
+%.qux.2585 = type { i32, i32, i8* }
+
+@g2 = external unnamed_addr constant [9 x i8], align 1
+@g3 = internal hidden unnamed_addr constant [1 x i8*] [i8* bitcast (i8* (%.qux.2585*)* @func35 to i8*)]
+
+define internal hidden i32 @func1(i32* %ptr, { i32, i32 }* nocapture %method) align 2 {
+  br label %1
+
+; <label>:1
+  br label %2
+
+; <label>:2
+  ret i32 undef
+}
+
+define internal hidden i32 @func10(%.qux.2496* nocapture %this) align 2 {
+  %1 = getelementptr inbounds %.qux.2496* %this, i32 0, i32 1, i32 1
+  %2 = load i32* %1, align 4
+  ret i32 %2
+}
+
+define internal hidden i8* @func29(i32* nocapture %this) align 2 {
+  ret i8* getelementptr inbounds ([9 x i8]* @g2, i32 0, i32 0)
+}
+
+define internal hidden i32* @func33(%.qux.2585* nocapture %this) align 2 {
+  ret i32* undef
+}
+
+define internal hidden i32* @func34(%.qux.2585* nocapture %this) align 2 {
+  %1 = getelementptr inbounds %.qux.2585* %this, i32 0
+  ret i32* undef
+}
+
+define internal hidden i8* @func35(%.qux.2585* nocapture %this) align 2 {
+  %1 = getelementptr inbounds %.qux.2585* %this, i32 0, i32 2
+  %2 = load i8** %1, align 4
+  ret i8* %2
+}