| ; Note: Test option to disable use of non-volatile CR to avoid CR spilling in prologue. |
| ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -ppc-disable-non-volatile-cr\ |
| ; RUN: -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | FileCheck --check-prefix=CHECK-DISABLE %s |
| ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu\ |
| ; RUN: -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | FileCheck --check-prefix=CHECK-ENABLE %s |
| |
| ; Function Attrs: nounwind |
| define dso_local signext i32 @DisableNonVolatileCR(i32 signext %a, i32 signext %b) { |
| ; CHECK-DISABLE-LABEL: DisableNonVolatileCR: |
| ; CHECK-DISABLE: # %bb.0: # %entry |
| ; CHECK-DISABLE-NOT: mfocrf [[REG1:r[0-9]+]] |
| ; CHECK-DISABLE-NOT: stw [[REG1]] |
| ; CHECK-DISABLE: stdu r1 |
| ; CHECK-DISABLE-DAG: mfocrf [[REG2:r[0-9]+]] |
| ; CHECK-DISABLE-DAG: stw [[REG2]] |
| ; CHECK-DISABLE: # %bb.1: # %if.then |
| ; |
| ; CHECK-ENABLE-LABEL: DisableNonVolatileCR: |
| ; CHECK-ENABLE: # %bb.0: # %entry |
| ; CHECK-ENABLE-DAG: mfocrf [[REG1:r[0-9]+]] |
| ; CHECK-ENABLE-DAG: stw [[REG1]] |
| ; CHECK-ENABLE: stdu r1 |
| ; CHECK-ENABLE-NOT: mfocrf [[REG2:r[0-9]+]] |
| ; CHECK-ENABLE-NOT: stw [[REG2]] |
| ; CHECK-ENABLE: # %bb.1: # %if.then |
| |
| entry: |
| %cmp = icmp slt i32 %a, %b |
| br i1 %cmp, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| tail call void bitcast (void (...)* @fa to void ()*)() |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| tail call void bitcast (void (...)* @fb to void ()*)() |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %conv = zext i1 %cmp to i32 |
| %call = tail call signext i32 @callee(i32 signext %conv) |
| ret i32 %call |
| } |
| |
| declare void @fa(...) |
| declare void @fb(...) |
| declare signext i32 @callee(i32 signext) |
