1; Note: Test option to disable use of non-volatile CR to avoid CR spilling in prologue. 2; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -ppc-disable-non-volatile-cr\ 3; RUN: -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | FileCheck --check-prefix=CHECK-DISABLE %s 4; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu\ 5; RUN: -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | FileCheck --check-prefix=CHECK-ENABLE %s 6 7; Function Attrs: nounwind 8define dso_local signext i32 @DisableNonVolatileCR(i32 signext %a, i32 signext %b) { 9; CHECK-DISABLE-LABEL: DisableNonVolatileCR: 10; CHECK-DISABLE: # %bb.0: # %entry 11; CHECK-DISABLE-NOT: mfocrf {{r[0-9]+}} 12; CHECK-DISABLE-NOT: stw {{r[0-9]+}} 13; CHECK-DISABLE: stdu r1 14; CHECK-DISABLE-DAG: mfocrf [[REG2:r[0-9]+]] 15; CHECK-DISABLE-DAG: stw [[REG2]] 16; CHECK-DISABLE: # %bb.1: # %if.then 17; 18; CHECK-ENABLE-LABEL: DisableNonVolatileCR: 19; CHECK-ENABLE: # %bb.0: # %entry 20; CHECK-ENABLE-DAG: mfocrf [[REG1:r[0-9]+]] 21; CHECK-ENABLE-DAG: stw [[REG1]] 22; CHECK-ENABLE: stdu r1 23; CHECK-ENABLE-NOT: mfocrf {{r[0-9]+}} 24; CHECK-ENABLE-NOT: stw {{r[0-9]+}} 25; CHECK-ENABLE: # %bb.1: # %if.then 26 27entry: 28 %cmp = icmp slt i32 %a, %b 29 br i1 %cmp, label %if.then, label %if.else 30 31if.then: ; preds = %entry 32 tail call void @fa() 33 br label %if.end 34 35if.else: ; preds = %entry 36 tail call void @fb() 37 br label %if.end 38 39if.end: ; preds = %if.else, %if.then 40 %conv = zext i1 %cmp to i32 41 %call = tail call signext i32 @callee(i32 signext %conv) 42 ret i32 %call 43} 44 45declare void @fa(...) 46declare void @fb(...) 47declare signext i32 @callee(i32 signext) 48