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Matt Arsenault 706eec22ee Reapply r359906, "RegAllocFast: Add heuristic to detect values not live-out of a block"
This reverts commit r359912.

This should pass now, since the clang test was made less fragile in
r359918.

llvm-svn: 359919
2019-05-03 19:06:57 +00:00

32 lines
1.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -fast-isel-sink-local-values -O0 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
define void @foo() {
; CHECK-LABEL: foo:
; CHECK: # %bb.0:
; CHECK-NEXT: # implicit-def: $rax
; CHECK-NEXT: jmpq *%rax
; CHECK-NEXT: .LBB0_1:
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: pcmpeqd %xmm1, %xmm1
; CHECK-NEXT: # implicit-def: $rax
; CHECK-NEXT: movdqu %xmm1, (%rax)
; CHECK-NEXT: .LBB0_2:
; CHECK-NEXT: retq
indirectbr i8* undef, [label %9, label %1]
; <label>:1: ; preds = %0
%2 = shufflevector <16 x i8> zeroinitializer, <16 x i8> <i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef>, <16 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23>
%3 = shufflevector <16 x i8> <i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0>, <16 x i8> zeroinitializer, <16 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23>
%4 = or <16 x i8> %3, %2
%5 = shufflevector <16 x i8> %4, <16 x i8> undef, <16 x i32> <i32 8, i32 5, i32 1, i32 13, i32 15, i32 10, i32 14, i32 0, i32 3, i32 2, i32 7, i32 4, i32 6, i32 9, i32 11, i32 12>
%6 = bitcast <16 x i8> %5 to <2 x i64>
%7 = xor <2 x i64> %6, zeroinitializer
%8 = xor <2 x i64> %7, <i64 -1, i64 -1>
store <2 x i64> %8, <2 x i64>* undef, align 1
unreachable
; <label>:9: ; preds = %0
ret void
}