2010-01-28 06:22:43 +00:00
|
|
|
; RUN: llc < %s -march=xcore -asm-verbose=0 | FileCheck %s
|
2009-10-08 15:38:17 +00:00
|
|
|
define i32 @ashr(i32 %a, i32 %b) {
|
|
|
|
%1 = ashr i32 %a, %b
|
|
|
|
ret i32 %1
|
|
|
|
}
|
|
|
|
; CHECK: ashr:
|
|
|
|
; CHECK-NEXT: ashr r0, r0, r1
|
|
|
|
|
|
|
|
define i32 @ashri1(i32 %a) {
|
|
|
|
%1 = ashr i32 %a, 24
|
|
|
|
ret i32 %1
|
|
|
|
}
|
|
|
|
; CHECK: ashri1:
|
|
|
|
; CHECK-NEXT: ashr r0, r0, 24
|
|
|
|
|
|
|
|
define i32 @ashri2(i32 %a) {
|
|
|
|
%1 = ashr i32 %a, 31
|
|
|
|
ret i32 %1
|
|
|
|
}
|
|
|
|
; CHECK: ashri2:
|
|
|
|
; CHECK-NEXT: ashr r0, r0, 32
|
|
|
|
|
|
|
|
define i32 @f1(i32 %a) {
|
|
|
|
%1 = icmp slt i32 %a, 0
|
|
|
|
br i1 %1, label %less, label %not_less
|
|
|
|
less:
|
|
|
|
ret i32 10
|
|
|
|
not_less:
|
|
|
|
ret i32 17
|
|
|
|
}
|
|
|
|
; CHECK: f1:
|
|
|
|
; CHECK-NEXT: ashr r0, r0, 32
|
2012-04-16 13:49:17 +00:00
|
|
|
; CHECK-NEXT: bt r0
|
2009-10-08 15:38:17 +00:00
|
|
|
|
|
|
|
define i32 @f2(i32 %a) {
|
|
|
|
%1 = icmp sge i32 %a, 0
|
|
|
|
br i1 %1, label %greater, label %not_greater
|
|
|
|
greater:
|
|
|
|
ret i32 10
|
|
|
|
not_greater:
|
|
|
|
ret i32 17
|
|
|
|
}
|
|
|
|
; CHECK: f2:
|
|
|
|
; CHECK-NEXT: ashr r0, r0, 32
|
|
|
|
; CHECK-NEXT: bt r0
|
|
|
|
|
|
|
|
define i32 @f3(i32 %a) {
|
|
|
|
%1 = icmp slt i32 %a, 0
|
|
|
|
%2 = select i1 %1, i32 10, i32 17
|
|
|
|
ret i32 %2
|
|
|
|
}
|
|
|
|
; CHECK: f3:
|
Enable machine sinking critical edge splitting. e.g.
define double @foo(double %x, double %y, i1 %c) nounwind {
%a = fdiv double %x, 3.2
%z = select i1 %c, double %a, double %y
ret double %z
}
Was:
_foo:
divsd LCPI0_0(%rip), %xmm0
testb $1, %dil
jne LBB0_2
movaps %xmm1, %xmm0
LBB0_2:
ret
Now:
_foo:
testb $1, %dil
je LBB0_2
divsd LCPI0_0(%rip), %xmm0
ret
LBB0_2:
movaps %xmm1, %xmm0
ret
This avoids the divsd when early exit is taken.
rdar://8454886
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114372 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-20 22:52:00 +00:00
|
|
|
; CHECK-NEXT: ashr r0, r0, 32
|
2012-04-16 13:49:17 +00:00
|
|
|
; CHECK-NEXT: bt r0
|
|
|
|
; CHECK-NEXT: ldc r0, 17
|
|
|
|
; CHECK: ldc r0, 10
|
2009-10-08 15:38:17 +00:00
|
|
|
|
|
|
|
define i32 @f4(i32 %a) {
|
|
|
|
%1 = icmp sge i32 %a, 0
|
|
|
|
%2 = select i1 %1, i32 10, i32 17
|
|
|
|
ret i32 %2
|
|
|
|
}
|
|
|
|
; CHECK: f4:
|
Enable machine sinking critical edge splitting. e.g.
define double @foo(double %x, double %y, i1 %c) nounwind {
%a = fdiv double %x, 3.2
%z = select i1 %c, double %a, double %y
ret double %z
}
Was:
_foo:
divsd LCPI0_0(%rip), %xmm0
testb $1, %dil
jne LBB0_2
movaps %xmm1, %xmm0
LBB0_2:
ret
Now:
_foo:
testb $1, %dil
je LBB0_2
divsd LCPI0_0(%rip), %xmm0
ret
LBB0_2:
movaps %xmm1, %xmm0
ret
This avoids the divsd when early exit is taken.
rdar://8454886
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114372 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-20 22:52:00 +00:00
|
|
|
; CHECK-NEXT: ashr r0, r0, 32
|
2012-04-16 13:49:17 +00:00
|
|
|
; CHECK-NEXT: bt r0
|
|
|
|
; CHECK-NEXT: ldc r0, 10
|
|
|
|
; CHECK: ldc r0, 17
|
2009-10-08 15:38:17 +00:00
|
|
|
|
|
|
|
define i32 @f5(i32 %a) {
|
|
|
|
%1 = icmp sge i32 %a, 0
|
|
|
|
%2 = zext i1 %1 to i32
|
|
|
|
ret i32 %2
|
|
|
|
}
|
|
|
|
; CHECK: f5:
|
|
|
|
; CHECK-NEXT: ashr r0, r0, 32
|
|
|
|
; CHECK-NEXT: eq r0, r0, 0
|