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25d7f2f024
Let the codegen recognized the nomerge attribute and disable branch folding when the attribute is given Differential Revision: https://reviews.llvm.org/D79537
36 lines
621 B
LLVM
36 lines
621 B
LLVM
; RUN: llc < %s -mtriple=riscv64 -o - | FileCheck %s
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define void @foo(i32 %i) {
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entry:
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switch i32 %i, label %if.end3 [
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i32 5, label %if.then
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i32 7, label %if.then2
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]
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if.then:
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tail call void @bar() #0
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br label %if.end3
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if.then2:
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tail call void @bar() #0
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br label %if.end3
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if.end3:
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tail call void @bar() #0
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ret void
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}
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declare void @bar()
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attributes #0 = { nomerge }
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0: # %entry
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; CHECK: # %bb.1: # %entry
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; CHECK: # %bb.2: # %if.then
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; CHECK-NEXT: call bar
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; CHECK: .LBB0_3: # %if.then2
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; CHECK-NEXT: call bar
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; CHECK: .LBB0_4: # %if.end3
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; CHECK: tail bar
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