29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
; Check that -mips-compact-branches={never,optimal,always} is accepted and honoured.
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; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=never < %s | FileCheck %s -check-prefix=NEVER
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; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=optimal < %s | FileCheck %s -check-prefix=OPTIMAL
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; RUN: llc -march=mips -mcpu=mips32r6 -mips-compact-branches=always < %s | FileCheck %s -check-prefix=ALWAYS
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define i32 @l(i32 signext %a, i32 signext %b) {
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entry:
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%add = add nsw i32 %b, %a
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%cmp = icmp slt i32 %add, 100
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; NEVER: beq
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; OPTIMAL: beq
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; ALWAYS: beqzc
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; This nop is required for correct as having (j|b)al as the instruction
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; immediately following beqzc would cause a forbidden slot hazard.
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; ALWAYS: nop
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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%call = tail call i32 @k()
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br label %if.end
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if.end: ; preds = %entry, %if.then
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%call.pn = phi i32 [ %call, %if.then ], [ -1, %entry ]
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%c.0 = add nsw i32 %call.pn, %add
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ret i32 %c.0
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}
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declare i32 @k() #1
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