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[PowerPC][HTM] Fix impossible reg-to-reg copy assert with ttest builtin
Summary: This is exposed by our internal testing. The reduced testcase will assert with "Impossible reg-to-reg copy" We can't use COPY to do 32-bit to 64-bit conversion. Reviewers: kbarton, hfinkel, nemanjai Reviewed By: hfinkel Subscribers: hiraditya, MaskRay, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64499 llvm-svn: 366255
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Jinsong Ji
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Jul 16, 2019
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -verify-machineinstrs \ | ||
; RUN: -mcpu=pwr8 -mattr=+htm < %s | FileCheck %s | ||
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define dso_local void @main() #0 { | ||
; CHECK-LABEL: main: | ||
; CHECK: # %bb.0: | ||
; CHECK-NEXT: li 3, 0 | ||
; CHECK-NEXT: tabortwci. 0, 3, 0 | ||
; CHECK-NEXT: mfocrf 3, 128 | ||
; CHECK-NEXT: rldicl 3, 3, 36, 28 | ||
; CHECK-NEXT: rlwinm. 3, 3, 31, 30, 31 | ||
; CHECK-NEXT: beqlr+ 0 | ||
; CHECK-NEXT: # %bb.1: | ||
%1 = call i64 @llvm.ppc.ttest() #1 | ||
%2 = lshr i64 %1, 1 | ||
%3 = and i64 %2, 3 | ||
%4 = icmp eq i64 %3, 0 | ||
br i1 %4, label %5, label %6 | ||
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5: ; preds = %0 | ||
ret void | ||
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6: ; preds = %0 | ||
unreachable | ||
} | ||
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; Function Attrs: nounwind | ||
declare i64 @llvm.ppc.ttest() #1 | ||
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