| ; 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 |
