diff options
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/Thumb/optionaldef-scheduling.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Thumb/optionaldef-scheduling.ll b/llvm/test/CodeGen/Thumb/optionaldef-scheduling.ll new file mode 100644 index 00000000000..bd091cf2b6f --- /dev/null +++ b/llvm/test/CodeGen/Thumb/optionaldef-scheduling.ll @@ -0,0 +1,18 @@ +; RUN: llc -mtriple=thumb-eabi %s -verify-machineinstrs -o - | FileCheck %s +; RUN: llc -mtriple=thumbv6-eabi %s -verify-machineinstrs -o - | FileCheck %s + +define i1 @test(i64 %arg) { +entry: + %ispos = icmp sgt i64 %arg, -1 + %neg = sub i64 0, %arg + %sel = select i1 %ispos, i64 %arg, i64 %neg + %cmp2 = icmp eq i64 %sel, %arg + ret i1 %cmp2 +} + +; The scheduler used to ignore OptionalDefs, and could unwittingly insert +; a flag-setting instruction in between an ADDS and the corresponding ADC. + +; CHECK: adds +; CHECK-NOT: eors +; CHECK: adcs |
