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; RUN: llc -march=mipsel -O0 < %s | FileCheck %s -check-prefix=None
; RUN: llc -march=mipsel < %s | FileCheck %s -check-prefix=Default
define void @foo1() nounwind {
entry:
; Default: jalr
; Default-NOT: nop
; Default: jr
; Default-NOT: nop
; Default: .end
; None: jalr
; None: nop
; None: jr
; None: nop
; None: .end
tail call void @foo2(i32 3) nounwind
ret void
}
declare void @foo2(i32)
; Check that cvt.d.w goes into jalr's delay slot.
;
define void @foo3(i32 %a) nounwind {
entry:
; Default: foo3:
; Default: jalr
; Default: cvt.d.w
%conv = sitofp i32 %a to double
tail call void @foo4(double %conv) nounwind
ret void
}
declare void @foo4(double)
@g2 = external global i32
@g1 = external global i32
@g3 = external global i32
; Check that branch delay slot can be filled with an instruction with operand
; $1.
;
; Default: foo5:
; Default-NOT: nop
define void @foo5(i32 %a) nounwind {
entry:
%0 = load i32* @g2, align 4
%tobool = icmp eq i32 %a, 0
br i1 %tobool, label %if.else, label %if.then
if.then:
%1 = load i32* @g1, align 4
%add = add nsw i32 %1, %0
store i32 %add, i32* @g1, align 4
br label %if.end
if.else:
%2 = load i32* @g3, align 4
%sub = sub nsw i32 %2, %0
store i32 %sub, i32* @g3, align 4
br label %if.end
if.end:
ret void
}
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