diff options
| author | Bill Wendling <isanbard@gmail.com> | 2010-07-15 23:32:40 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2010-07-15 23:32:40 +0000 |
| commit | e9bf7e692e56656ef13b33af86624d0fdcd578fb (patch) | |
| tree | 2cb585a3c4d0fbf8bb51f00db689241d03af0ad0 /test/CodeGen/PowerPC | |
| parent | 60108e96bbc5432f4fe06ba313e64448e97a0e15 (diff) | |
Handle code gen for the unreachable instruction if it's the only instruction in
the function. We'll just turn it into a "trap" instruction instead.
The problem with not handling this is that it might generate a prologue without
the equivalent epilogue to go with it:
$ cat t.ll
define void @foo() {
entry:
unreachable
}
$ llc -o - t.ll -relocation-model=pic -disable-fp-elim -unwind-tables
.section __TEXT,__text,regular,pure_instructions
.globl _foo
.align 4, 0x90
_foo: ## @foo
Leh_func_begin0:
## BB#0: ## %entry
pushq %rbp
Ltmp0:
movq %rsp, %rbp
Ltmp1:
Leh_func_end0:
...
The unwind tables then have bad data in them causing all sorts of problems.
Fixes <rdar://problem/8096481>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108473 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/PowerPC')
| -rw-r--r-- | test/CodeGen/PowerPC/2008-01-25-EmptyFunction.ll | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/test/CodeGen/PowerPC/2008-01-25-EmptyFunction.ll b/test/CodeGen/PowerPC/2008-01-25-EmptyFunction.ll index db2ab877ff..ba59309ec2 100644 --- a/test/CodeGen/PowerPC/2008-01-25-EmptyFunction.ll +++ b/test/CodeGen/PowerPC/2008-01-25-EmptyFunction.ll @@ -1,4 +1,4 @@ -; RUN: llc < %s -march=ppc32 | grep nop +; RUN: llc < %s -march=ppc32 | grep trap target triple = "powerpc-apple-darwin8" |