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Diffstat (limited to 'test/Transforms/SCCP/calltest.ll')
-rw-r--r-- | test/Transforms/SCCP/calltest.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/SCCP/calltest.ll b/test/Transforms/SCCP/calltest.ll new file mode 100644 index 0000000000..e88914d8dc --- /dev/null +++ b/test/Transforms/SCCP/calltest.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as < %s | opt -sccp -adce -simplifycfg | llvm-dis | not grep br + +; No matter how hard you try, sqrt(1.0) is always 1.0. This allows the +; optimizer to delete this loop. + +declare double %sqrt(double) + +double %test(uint %param) { +entry: + br label %Loop + +Loop: + %I2 = phi uint [ 0, %entry ], [ %I3, %Loop ] + %V = phi double [ 1.0, %entry], [ %V2, %Loop ] + + %V2 = call double %sqrt(double %V) + + %I3 = add uint %I2, 1 + %tmp.7 = setne uint %I3, %param + br bool %tmp.7, label %Loop, label %Exit + +Exit: + ret double %V +} |