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
65 lines
1.4 KiB
LLVM
65 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=s390x-linux-gnu -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: stmg %r14, %r15, 112(%r15)
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; CHECK-NEXT: aghi %r15, -160
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; CHECK-NEXT: cije %r2, 7, .LBB0_3
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; CHECK-NEXT: # %bb.1: # %entry
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; CHECK-NEXT: cijlh %r2, 5, .LBB0_4
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; CHECK-NEXT: # %bb.2: # %if.then
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; CHECK-NEXT: brasl %r14, bar@PLT
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; CHECK-NEXT: lmg %r14, %r15, 272(%r15)
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; CHECK-NEXT: jg bar@PLT
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; CHECK-NEXT: .LBB0_3: # %if.then2
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; CHECK-NEXT: brasl %r14, bar@PLT
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; CHECK-NEXT: .LBB0_4: # %if.end3
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; CHECK-NEXT: lmg %r14, %r15, 272(%r15)
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; CHECK-NEXT: jg bar@PLT
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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: tmll %r2, 1
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; CHECK-NEXT: jge bar@PLT
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; CHECK-NEXT: .LBB1_1: # %if.then
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; CHECK-NEXT: jg bar@PLT
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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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