3977b77a6b
In D79537, `nomerge` was made to only apply to non-tail calls. This fixes it by also applying it to tail calls. For ARM, I only made the new MI to inherit the flag under `TCRETURNdi` and `TCRETURNri`, because that's the place tail calls got replaced. Not sure if there's any other place needed. Fixes #61545. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D146749
68 lines
1.4 KiB
LLVM
68 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc < %s -mtriple=arm -o - | FileCheck %s
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define void @foo(i32 %i) nounwind {
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; CHECK-LABEL: foo:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: push {r11, lr}
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; CHECK-NEXT: cmp r0, #7
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; CHECK-NEXT: beq .LBB0_3
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; CHECK-NEXT: @ %bb.1: @ %entry
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; CHECK-NEXT: cmp r0, #5
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; CHECK-NEXT: bne .LBB0_4
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; CHECK-NEXT: @ %bb.2: @ %if.then
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; CHECK-NEXT: bl bar
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; CHECK-NEXT: pop {r11, lr}
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; CHECK-NEXT: b bar
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; CHECK-NEXT: .LBB0_3: @ %if.then2
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; CHECK-NEXT: bl bar
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; CHECK-NEXT: .LBB0_4: @ %if.end3
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; CHECK-NEXT: pop {r11, lr}
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; CHECK-NEXT: b bar
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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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define void @foo_tail(i1 %i) nounwind {
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; CHECK-LABEL: foo_tail:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: tst r0, #1
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; CHECK-NEXT: beq .LBB1_2
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; CHECK-NEXT: @ %bb.1: @ %if.then
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; CHECK-NEXT: b bar
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; CHECK-NEXT: .LBB1_2: @ %if.else
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; CHECK-NEXT: b bar
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entry:
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br i1 %i, label %if.then, label %if.else
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if.then:
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tail call void @bar() #0
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br label %if.end
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if.else:
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tail call void @bar() #0
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br label %if.end
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if.end:
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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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