1 ; Check that -mips-compact-branches={never,optimal,always} is accepted and honoured. 2 ; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=never < %s | FileCheck %s -check-prefix=NEVER 3 ; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=optimal < %s | FileCheck %s -check-prefix=OPTIMAL 4 ; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=always < %s | FileCheck %s -check-prefix=ALWAYS 5 6 define i32 @l(i32 signext %a, i32 signext %b) { 7 entry: 8 %add = add nsw i32 %b, %a 9 %cmp = icmp slt i32 %add, 100 10 ; NEVER: beq 11 ; OPTIMAL: beq 12 ; ALWAYS: beqzc 13 ; This nop is required for correct as having (j|b)al as the instruction 14 ; immediately following beqzc would cause a forbidden slot hazard. 15 ; ALWAYS: nop 16 br i1 %cmp, label %if.then, label %if.end 17 18 if.then: ; preds = %entry 19 %call = tail call i32 @k() 20 br label %if.end 21 22 if.end: ; preds = %entry, %if.then 23 %call.pn = phi i32 [ %call, %if.then ], [ -1, %entry ] 24 %c.0 = add nsw i32 %call.pn, %add 25 ret i32 %c.0 26 } 27 28 declare i32 @k() #1 29
