1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=x86_64-apple-darwin -asm-verbose=false | FileCheck %s -check-prefix=64BIT 2*9880d681SAndroid Build Coastguard Worker; rdar://7329206 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; In 32-bit the partial register stall would degrade performance. 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine zeroext i16 @t1(i16 zeroext %c, i16 zeroext %k) nounwind ssp { 7*9880d681SAndroid Build Coastguard Workerentry: 8*9880d681SAndroid Build Coastguard Worker; 32BIT-LABEL: t1: 9*9880d681SAndroid Build Coastguard Worker; 32BIT: movw 20(%esp), %ax 10*9880d681SAndroid Build Coastguard Worker; 32BIT-NOT: movw %ax, %cx 11*9880d681SAndroid Build Coastguard Worker; 32BIT: leal 1(%eax), %ecx 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Worker; 64BIT-LABEL: t1: 14*9880d681SAndroid Build Coastguard Worker; 64BIT-NOT: movw %si, %ax 15*9880d681SAndroid Build Coastguard Worker; 64BIT: movl %esi, %eax 16*9880d681SAndroid Build Coastguard Worker %0 = icmp eq i16 %k, %c ; <i1> [#uses=1] 17*9880d681SAndroid Build Coastguard Worker %1 = add i16 %k, 1 ; <i16> [#uses=3] 18*9880d681SAndroid Build Coastguard Worker br i1 %0, label %bb, label %bb1 19*9880d681SAndroid Build Coastguard Worker 20*9880d681SAndroid Build Coastguard Workerbb: ; preds = %entry 21*9880d681SAndroid Build Coastguard Worker tail call void @foo(i16 zeroext %1) nounwind 22*9880d681SAndroid Build Coastguard Worker ret i16 %1 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %entry 25*9880d681SAndroid Build Coastguard Worker ret i16 %1 26*9880d681SAndroid Build Coastguard Worker} 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Workerdefine zeroext i16 @t2(i16 zeroext %c, i16 zeroext %k) nounwind ssp { 29*9880d681SAndroid Build Coastguard Workerentry: 30*9880d681SAndroid Build Coastguard Worker; 32BIT-LABEL: t2: 31*9880d681SAndroid Build Coastguard Worker; 32BIT: movw 20(%esp), %ax 32*9880d681SAndroid Build Coastguard Worker; 32BIT-NOT: movw %ax, %cx 33*9880d681SAndroid Build Coastguard Worker; 32BIT: leal -1(%eax), %ecx 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Worker; 64BIT-LABEL: t2: 36*9880d681SAndroid Build Coastguard Worker; 64BIT-NOT: movw %si, %ax 37*9880d681SAndroid Build Coastguard Worker; 64BIT: movl %esi, %eax 38*9880d681SAndroid Build Coastguard Worker; 64BIT: movzwl %ax 39*9880d681SAndroid Build Coastguard Worker %0 = icmp eq i16 %k, %c ; <i1> [#uses=1] 40*9880d681SAndroid Build Coastguard Worker %1 = add i16 %k, -1 ; <i16> [#uses=3] 41*9880d681SAndroid Build Coastguard Worker br i1 %0, label %bb, label %bb1 42*9880d681SAndroid Build Coastguard Worker 43*9880d681SAndroid Build Coastguard Workerbb: ; preds = %entry 44*9880d681SAndroid Build Coastguard Worker tail call void @foo(i16 zeroext %1) nounwind 45*9880d681SAndroid Build Coastguard Worker ret i16 %1 46*9880d681SAndroid Build Coastguard Worker 47*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %entry 48*9880d681SAndroid Build Coastguard Worker ret i16 %1 49*9880d681SAndroid Build Coastguard Worker} 50*9880d681SAndroid Build Coastguard Worker 51*9880d681SAndroid Build Coastguard Workerdeclare void @foo(i16 zeroext) 52*9880d681SAndroid Build Coastguard Worker 53*9880d681SAndroid Build Coastguard Workerdefine zeroext i16 @t3(i16 zeroext %c, i16 zeroext %k) nounwind ssp { 54*9880d681SAndroid Build Coastguard Workerentry: 55*9880d681SAndroid Build Coastguard Worker; 32BIT-LABEL: t3: 56*9880d681SAndroid Build Coastguard Worker; 32BIT: movw 20(%esp), %ax 57*9880d681SAndroid Build Coastguard Worker; 32BIT-NOT: movw %ax, %cx 58*9880d681SAndroid Build Coastguard Worker; 32BIT: leal 2(%eax), %ecx 59*9880d681SAndroid Build Coastguard Worker 60*9880d681SAndroid Build Coastguard Worker; 64BIT-LABEL: t3: 61*9880d681SAndroid Build Coastguard Worker; 64BIT-NOT: movw %si, %ax 62*9880d681SAndroid Build Coastguard Worker; 64BIT: movl %esi, %eax 63*9880d681SAndroid Build Coastguard Worker %0 = add i16 %k, 2 ; <i16> [#uses=3] 64*9880d681SAndroid Build Coastguard Worker %1 = icmp eq i16 %k, %c ; <i1> [#uses=1] 65*9880d681SAndroid Build Coastguard Worker br i1 %1, label %bb, label %bb1 66*9880d681SAndroid Build Coastguard Worker 67*9880d681SAndroid Build Coastguard Workerbb: ; preds = %entry 68*9880d681SAndroid Build Coastguard Worker tail call void @foo(i16 zeroext %0) nounwind 69*9880d681SAndroid Build Coastguard Worker ret i16 %0 70*9880d681SAndroid Build Coastguard Worker 71*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %entry 72*9880d681SAndroid Build Coastguard Worker ret i16 %0 73*9880d681SAndroid Build Coastguard Worker} 74*9880d681SAndroid Build Coastguard Worker 75*9880d681SAndroid Build Coastguard Workerdefine zeroext i16 @t4(i16 zeroext %c, i16 zeroext %k) nounwind ssp { 76*9880d681SAndroid Build Coastguard Workerentry: 77*9880d681SAndroid Build Coastguard Worker; 32BIT-LABEL: t4: 78*9880d681SAndroid Build Coastguard Worker; 32BIT: movw 16(%esp), %ax 79*9880d681SAndroid Build Coastguard Worker; 32BIT: movw 20(%esp), %cx 80*9880d681SAndroid Build Coastguard Worker; 32BIT-NOT: movw %cx, %dx 81*9880d681SAndroid Build Coastguard Worker; 32BIT: leal (%ecx,%eax), %edx 82*9880d681SAndroid Build Coastguard Worker 83*9880d681SAndroid Build Coastguard Worker; 64BIT-LABEL: t4: 84*9880d681SAndroid Build Coastguard Worker; 64BIT-NOT: movw %si, %ax 85*9880d681SAndroid Build Coastguard Worker; 64BIT: movl %esi, %eax 86*9880d681SAndroid Build Coastguard Worker %0 = add i16 %k, %c ; <i16> [#uses=3] 87*9880d681SAndroid Build Coastguard Worker %1 = icmp eq i16 %k, %c ; <i1> [#uses=1] 88*9880d681SAndroid Build Coastguard Worker br i1 %1, label %bb, label %bb1 89*9880d681SAndroid Build Coastguard Worker 90*9880d681SAndroid Build Coastguard Workerbb: ; preds = %entry 91*9880d681SAndroid Build Coastguard Worker tail call void @foo(i16 zeroext %0) nounwind 92*9880d681SAndroid Build Coastguard Worker ret i16 %0 93*9880d681SAndroid Build Coastguard Worker 94*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %entry 95*9880d681SAndroid Build Coastguard Worker ret i16 %0 96*9880d681SAndroid Build Coastguard Worker} 97