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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AArch64/eliminate-trunc.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

40 lines
1.5 KiB
LLVM

; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-none-apple-ios7.0 -mcpu=cyclone | FileCheck %s
; Check trunc i64 operation is translated as a subregister access
; eliminating an i32 induction varible.
; CHECK-NOT: add {{x[0-9]+}}, {{x[0-9]+}}, #1
; CHECK: add {{w[0-9]+}}, {{w[0-9]+}}, #1
; CHECK-NEXT: cmp {{w[0-9]+}}, {{w[0-9]+}}
define void @test1_signed(ptr nocapture %a, ptr nocapture readonly %box, i8 %limit, i64 %inv) minsize {
entry:
%conv = zext i8 %limit to i32
%cmp223 = icmp eq i8 %limit, 0
br i1 %cmp223, label %for.end15, label %for.body4.lr.ph.us
for.body4.us:
%indvars.iv = phi i64 [ 0, %for.body4.lr.ph.us ], [ %indvars.iv.next, %for.body4.us ]
%arrayidx6.us = getelementptr inbounds [8 x i8], ptr %a, i64 %indvars.iv, i64 %inv
%0 = load i8, ptr %arrayidx6.us, align 1
%idxprom7.us = zext i8 %0 to i64
%arrayidx8.us = getelementptr inbounds i8, ptr %box, i64 %idxprom7.us
%1 = load i8, ptr %arrayidx8.us, align 1
store i8 %1, ptr %arrayidx6.us, align 1
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%2 = trunc i64 %indvars.iv.next to i32
%cmp2.us = icmp slt i32 %2, %conv
br i1 %cmp2.us, label %for.body4.us, label %for.cond1.for.inc13_crit_edge.us
for.body4.lr.ph.us:
%indvars.iv26 = phi i64 [ %indvars.iv.next27, %for.cond1.for.inc13_crit_edge.us ], [ 0, %entry ]
br label %for.body4.us
for.cond1.for.inc13_crit_edge.us:
%indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 1
%exitcond28 = icmp eq i64 %indvars.iv26, 3
br i1 %exitcond28, label %for.end15, label %for.body4.lr.ph.us
for.end15:
ret void
}