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| author | James Y Knight <jyknight@google.com> | 2015-08-19 14:47:04 +0000 |
|---|---|---|
| committer | James Y Knight <jyknight@google.com> | 2015-08-19 14:47:04 +0000 |
| commit | d966fb6fef351da66768cbe560c90dceeb6bf07a (patch) | |
| tree | b0ed5be4eac5c0211b1bef42f9dc5f5c58e22a89 /llvm/test/CodeGen/SPARC | |
| parent | 494abf1ad8d4771b0d15ae1437b39e26aa69a7bf (diff) | |
| download | bcm5719-llvm-d966fb6fef351da66768cbe560c90dceeb6bf07a.tar.gz bcm5719-llvm-d966fb6fef351da66768cbe560c90dceeb6bf07a.zip | |
[SPARC] Fix BooleanContents, so that select of a trunc doesn't
eliminate the trunc.
Differential Revision: http://reviews.llvm.org/D10442
llvm-svn: 245444
Diffstat (limited to 'llvm/test/CodeGen/SPARC')
| -rw-r--r-- | llvm/test/CodeGen/SPARC/select-mask.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/SPARC/select-mask.ll b/llvm/test/CodeGen/SPARC/select-mask.ll new file mode 100644 index 00000000000..12e57103594 --- /dev/null +++ b/llvm/test/CodeGen/SPARC/select-mask.ll @@ -0,0 +1,17 @@ +; RUN: llc -march=sparc < %s + +;; getBooleanContents on Sparc used to claim that no bits mattered +;; other than the first for SELECT. Thus, the 'trunc' got eliminated +;; as redundant. But, cmp does NOT ignore the other bits! + +; CHECK-LABEL select_mask: +; CHECK: ldub [%o0], [[R:%[goli][0-7]]] +; CHECK: and [[R]], 1, [[V:%[goli][0-7]]] +; CHECK: cmp [[V]], 0 +define i32 @select_mask(i8* %this) { +entry: + %bf.load2 = load i8, i8* %this, align 4 + %bf.cast5 = trunc i8 %bf.load2 to i1 + %cond = select i1 %bf.cast5, i32 2, i32 0 + ret i32 %cond +} |
