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| author | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2016-07-28 20:01:59 +0000 |
|---|---|---|
| committer | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2016-07-28 20:01:59 +0000 |
| commit | 167d918225ecd05a63f6b8d449c317feda741e18 (patch) | |
| tree | 6d6b407bbff90a3ad7567398edab734cf2c60926 /llvm/test/CodeGen/Hexagon/constp-rewrite-branches.ll | |
| parent | b7c72717c92e3d7260bfe8aebc110971b32bf097 (diff) | |
| download | bcm5719-llvm-167d918225ecd05a63f6b8d449c317feda741e18.tar.gz bcm5719-llvm-167d918225ecd05a63f6b8d449c317feda741e18.zip | |
[Hexagon] Implement MI-level constant propagation
llvm-svn: 277028
Diffstat (limited to 'llvm/test/CodeGen/Hexagon/constp-rewrite-branches.ll')
| -rw-r--r-- | llvm/test/CodeGen/Hexagon/constp-rewrite-branches.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/constp-rewrite-branches.ll b/llvm/test/CodeGen/Hexagon/constp-rewrite-branches.ll new file mode 100644 index 00000000000..dfac49cb553 --- /dev/null +++ b/llvm/test/CodeGen/Hexagon/constp-rewrite-branches.ll @@ -0,0 +1,17 @@ +; RUN: llc -O2 -march hexagon < %s | FileCheck %s + +define i32 @foo(i32 %x) { + %p = icmp eq i32 %x, 0 + br i1 %p, label %zero, label %nonzero +nonzero: + %v1 = add i32 %x, 1 + %c = icmp eq i32 %x, %v1 +; This branch will be rewritten by HCP. A bug would cause both branches to +; go away, leaving no path to "ret -1". + br i1 %c, label %zero, label %other +zero: + ret i32 0 +other: +; CHECK: -1 + ret i32 -1 +} |
