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; RUN: llc < %s -mtriple=x86_64-apple-darwin -asm-verbose=false | FileCheck %s -check-prefix=64BIT
; rdar://7329206
; In 32-bit the partial register stall would degrade performance.
define zeroext i16 @t1(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
entry:
; 32BIT-LABEL: t1:
; 32BIT: movw 20(%esp), %ax
; 32BIT-NOT: movw %ax, %cx
; 32BIT: leal 1(%eax), %ecx
; 64BIT-LABEL: t1:
; 64BIT-NOT: movw %si, %ax
; 64BIT: leal 1(%rsi), %eax
%0 = icmp eq i16 %k, %c ; <i1> [#uses=1]
%1 = add i16 %k, 1 ; <i16> [#uses=3]
br i1 %0, label %bb, label %bb1
bb: ; preds = %entry
tail call void @foo(i16 zeroext %1) nounwind
ret i16 %1
bb1: ; preds = %entry
ret i16 %1
}
define zeroext i16 @t2(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
entry:
; 32BIT-LABEL: t2:
; 32BIT: movw 20(%esp), %ax
; 32BIT-NOT: movw %ax, %cx
; 32BIT: leal -1(%eax), %ecx
; 64BIT-LABEL: t2:
; 64BIT-NOT: movw %si, %ax
; 64BIT: decl %eax
; 64BIT: movzwl %ax
%0 = icmp eq i16 %k, %c ; <i1> [#uses=1]
%1 = add i16 %k, -1 ; <i16> [#uses=3]
br i1 %0, label %bb, label %bb1
bb: ; preds = %entry
tail call void @foo(i16 zeroext %1) nounwind
ret i16 %1
bb1: ; preds = %entry
ret i16 %1
}
declare void @foo(i16 zeroext)
define zeroext i16 @t3(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
entry:
; 32BIT-LABEL: t3:
; 32BIT: movw 20(%esp), %ax
; 32BIT-NOT: movw %ax, %cx
; 32BIT: leal 2(%eax), %ecx
; 64BIT-LABEL: t3:
; 64BIT-NOT: movw %si, %ax
; 64BIT: addl $2, %eax
%0 = add i16 %k, 2 ; <i16> [#uses=3]
%1 = icmp eq i16 %k, %c ; <i1> [#uses=1]
br i1 %1, label %bb, label %bb1
bb: ; preds = %entry
tail call void @foo(i16 zeroext %0) nounwind
ret i16 %0
bb1: ; preds = %entry
ret i16 %0
}
define zeroext i16 @t4(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
entry:
; 32BIT-LABEL: t4:
; 32BIT: movw 16(%esp), %ax
; 32BIT: movw 20(%esp), %cx
; 32BIT-NOT: movw %cx, %dx
; 32BIT: leal (%ecx,%eax), %edx
; 64BIT-LABEL: t4:
; 64BIT-NOT: movw %si, %ax
; 64BIT: addl %edi, %eax
%0 = add i16 %k, %c ; <i16> [#uses=3]
%1 = icmp eq i16 %k, %c ; <i1> [#uses=1]
br i1 %1, label %bb, label %bb1
bb: ; preds = %entry
tail call void @foo(i16 zeroext %0) nounwind
ret i16 %0
bb1: ; preds = %entry
ret i16 %0
}
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