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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/coalescer-subreg.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

30 lines
806 B
LLVM

; RUN: llc -o - %s -verify-machineinstrs
; This used to crash when coalescing a regclass like GR16 which did not support
; the sub_8bit_hi subregister with a class like GR16_ABCD that did.
target triple = "x86_64-apple-macosx10.10.0"
define void @test(i1 %arg) #0 {
entry:
br i1 %arg, label %loop, label %for.end597
loop:
%0 = load i16, ptr null, align 4
%1 = load i16, ptr undef, align 4
%or1 = or i16 %1, %0
%or2 = trunc i16 %or1 to i8
store i8 %or2, ptr undef, align 4
%2 = or i16 %1, %0
%or3 = lshr i16 %2, 8
%or4 = trunc i16 %or3 to i8
store i8 %or4, ptr undef, align 1
%3 = load i32, ptr undef, align 4
%4 = load i32, ptr undef, align 4
%or5 = or i32 %4, %3
store i32 %or5, ptr undef, align 4
store i32 0, ptr undef, align 4
br label %loop
for.end597:
ret void
}