2009-12-11 07:02:21 +01:00
|
|
|
; RUN: llc < %s -mtriple=x86_64-apple-darwin -asm-verbose=false | FileCheck %s -check-prefix=64BIT
|
2009-12-12 21:03:14 +01:00
|
|
|
; rdar://7329206
|
|
|
|
|
|
|
|
|
|
; In 32-bit the partial register stall would degrade performance.
|
2009-12-11 07:02:21 +01:00
|
|
|
|
|
|
|
|
define zeroext i16 @t1(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
; 32BIT: t1:
|
|
|
|
|
; 32BIT: movw 20(%esp), %ax
|
|
|
|
|
; 32BIT-NOT: movw %ax, %cx
|
|
|
|
|
; 32BIT: leal 1(%eax), %ecx
|
|
|
|
|
|
|
|
|
|
; 64BIT: 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: t2:
|
|
|
|
|
; 32BIT: movw 20(%esp), %ax
|
|
|
|
|
; 32BIT-NOT: movw %ax, %cx
|
|
|
|
|
; 32BIT: leal -1(%eax), %ecx
|
|
|
|
|
|
|
|
|
|
; 64BIT: t2:
|
|
|
|
|
; 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
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
declare void @foo(i16 zeroext)
|
|
|
|
|
|
|
|
|
|
define zeroext i16 @t3(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
; 32BIT: t3:
|
|
|
|
|
; 32BIT: movw 20(%esp), %ax
|
|
|
|
|
; 32BIT-NOT: movw %ax, %cx
|
|
|
|
|
; 32BIT: leal 2(%eax), %ecx
|
|
|
|
|
|
|
|
|
|
; 64BIT: t3:
|
|
|
|
|
; 64BIT-NOT: movw %si, %ax
|
|
|
|
|
; 64BIT: leal 2(%rsi), %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: t4:
|
|
|
|
|
; 32BIT: movw 16(%esp), %ax
|
|
|
|
|
; 32BIT: movw 20(%esp), %cx
|
|
|
|
|
; 32BIT-NOT: movw %cx, %dx
|
|
|
|
|
; 32BIT: leal (%ecx,%eax), %edx
|
|
|
|
|
|
|
|
|
|
; 64BIT: t4:
|
|
|
|
|
; 64BIT-NOT: movw %si, %ax
|
|
|
|
|
; 64BIT: leal (%rsi,%rdi), %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
|
|
|
|
|
}
|
