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| author | Owen Anderson <resistor@mac.com> | 2012-07-09 20:31:12 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2012-07-09 20:31:12 +0000 |
| commit | d9bf71fdd26475f4629ef8861debfd2c621a372f (patch) | |
| tree | 6e797d4b8428dc76be7375412b7a1e74a103492f /test/CodeGen/ARM/select.ll | |
| parent | 6209364834a4c0ca720d3fcc9ef7fa4c1fb39ecc (diff) | |
| download | llvm-d9bf71fdd26475f4629ef8861debfd2c621a372f.tar.gz llvm-d9bf71fdd26475f4629ef8861debfd2c621a372f.tar.bz2 llvm-d9bf71fdd26475f4629ef8861debfd2c621a372f.tar.xz | |
Teach the DAG combiner to turn sitofp/uitofp from i1 into a conditional move, since there are only two possible values.
Previously, this would become an integer extension operation, followed by a real integer->float conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159957 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/ARM/select.ll')
| -rw-r--r-- | test/CodeGen/ARM/select.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/select.ll b/test/CodeGen/ARM/select.ll index 3e07da841a..418d4f31ee 100644 --- a/test/CodeGen/ARM/select.ll +++ b/test/CodeGen/ARM/select.ll @@ -113,3 +113,29 @@ entry: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, [2 x i32], i32, float)*)(i8* undef, i8* undef, [2 x i32] %tmp493, i32 0, float 1.000000e+00) optsize ret void } + +; CHECK: f10 +define float @f10(i32 %a, i32 %b) nounwind uwtable readnone ssp { +; CHECK-NOT: floatsisf + %1 = icmp eq i32 %a, %b + %2 = zext i1 %1 to i32 + %3 = sitofp i32 %2 to float + ret float %3 +} + +; CHECK: f11 +define float @f11(i32 %a, i32 %b) nounwind uwtable readnone ssp { +; CHECK-NOT: floatsisf + %1 = icmp eq i32 %a, %b + %2 = sitofp i1 %1 to float + ret float %2 +} + +; CHECK: f12 +define float @f12(i32 %a, i32 %b) nounwind uwtable readnone ssp { +; CHECK-NOT: floatunsisf + %1 = icmp eq i32 %a, %b + %2 = uitofp i1 %1 to float + ret float %2 +} + |