You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
1.1 KiB
29 lines
1.1 KiB
4 months ago
|
; Check that -mips-compact-branches={never,optimal,always} is accepted and honoured.
|
||
|
|
; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=never < %s | FileCheck %s -check-prefix=NEVER
|
||
|
|
; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=optimal < %s | FileCheck %s -check-prefix=OPTIMAL
|
||
|
|
; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=always < %s | FileCheck %s -check-prefix=ALWAYS
|
||
|
|
|
||
|
|
define i32 @l(i32 signext %a, i32 signext %b) {
|
||
|
|
entry:
|
||
|
|
%add = add nsw i32 %b, %a
|
||
|
|
%cmp = icmp slt i32 %add, 100
|
||
|
|
; NEVER: beq
|
||
|
|
; OPTIMAL: beq
|
||
|
|
; ALWAYS: beqzc
|
||
|
|
; This nop is required for correct as having (j|b)al as the instruction
|
||
|
|
; immediately following beqzc would cause a forbidden slot hazard.
|
||
|
|
; ALWAYS: nop
|
||
|
|
br i1 %cmp, label %if.then, label %if.end
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
%call = tail call i32 @k()
|
||
|
|
br label %if.end
|
||
|
|
|
||
|
|
if.end: ; preds = %entry, %if.then
|
||
|
|
%call.pn = phi i32 [ %call, %if.then ], [ -1, %entry ]
|
||
|
|
%c.0 = add nsw i32 %call.pn, %add
|
||
|
|
ret i32 %c.0
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @k() #1
|