mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-25 22:12:57 +02:00
09865c30b6
This can significantly reduce the size of the switch, allowing for more efficient lowering. I also worked with the idea of exploiting unreachable defaults by omitting the range check for jump tables, but always ended up with a non-neglible binary size increase. It might be worth looking into some more. llvm-svn: 223049
41 lines
1.3 KiB
LLVM
41 lines
1.3 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-darwin10 -O0 < %s | FileCheck %s
|
|
|
|
; test that we print a label that we use. We had a bug where
|
|
; we would print the jump, but not the label because it was considered
|
|
; a fall through.
|
|
|
|
; CHECK: jmp LBB0_9
|
|
; CHECK: LBB0_9: ## %cleanup
|
|
|
|
define void @foo() {
|
|
entry:
|
|
br i1 undef, label %land.lhs.true, label %if.end11
|
|
|
|
land.lhs.true: ; preds = %entry
|
|
br i1 undef, label %if.then, label %if.end11
|
|
|
|
if.then: ; preds = %land.lhs.true
|
|
br i1 undef, label %if.then9, label %if.end
|
|
|
|
if.then9: ; preds = %if.then
|
|
br label %cleanup
|
|
|
|
if.end: ; preds = %if.then
|
|
br label %cleanup
|
|
|
|
cleanup: ; preds = %if.end, %if.then9
|
|
switch i32 undef, label %default [
|
|
i32 0, label %cleanup.cont
|
|
i32 1, label %if.end11
|
|
]
|
|
|
|
cleanup.cont: ; preds = %cleanup
|
|
br label %if.end11
|
|
|
|
if.end11: ; preds = %cleanup.cont, %cleanup, %land.lhs.true, %entry
|
|
ret void
|
|
|
|
default: ; preds = %cleanup
|
|
br label %if.end11
|
|
}
|