1 ; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -verify-machineinstrs | FileCheck %s 2 ; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -verify-machineinstrs -ppc-gen-isel=false | FileCheck --check-prefix=CHECK-NO-ISEL %s 3 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64" 4 target triple = "powerpc64-unknown-linux-gnu" 5 6 define i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) { 7 entry: 8 %sext82 = shl i32 %d, 16 9 %conv29 = ashr exact i32 %sext82, 16 10 %cmp = icmp slt i32 %sext82, 0 11 br i1 %cmp, label %cond.true, label %cond.false 12 13 cond.true: ; preds = %sw.epilog 14 %and33 = and i32 %conv29, 32767 15 %sub34 = sub nsw i32 %a, %and33 16 br label %cond.end 17 18 cond.false: ; preds = %sw.epilog 19 %add37 = add nsw i32 %conv29, %a 20 br label %cond.end 21 22 ; CHECK-LABEL: @test 23 ; CHECK-NO-ISEL-LABEL: @test 24 ; CHECK: add [[REG:[0-9]+]], 25 ; CHECK: subf [[REG2:[0-9]+]], 26 ; CHECK: isel {{[0-9]+}}, [[REG]], [[REG2]], 27 ; CHECK-NO-ISEL: bc 12, 1, [[TRUE:.LBB[0-9]+]] 28 ; CHECK-NO-ISEL-NEXT: b [[SUCCESSOR:.LBB[0-9]+]] 29 ; CHECK-NO-ISEL: [[TRUE]] 30 ; CHECK-NO-ISEL-NEXT: addi 5, 6, 0 31 ; CHECK-NO-ISEL: extsh 5, 5 32 ; CHECK-NO-ISEL-NEXT: add 3, 3, 5 33 ; CHECK-NO-ISEL-NEXT: blr 34 35 cond.end: ; preds = %cond.false, %cond.true 36 %cond = phi i32 [ %sub34, %cond.true ], [ %add37, %cond.false ] 37 %sext83 = shl i32 %cond, 16 38 %conv39 = ashr exact i32 %sext83, 16 39 %add41 = sub i32 %b, %a 40 %sub43 = add i32 %add41, %conv39 41 ret i32 %sub43 42 } 43 44
