llvm-project/llvm/test/CodeGen/Hexagon/swp-dead-regseq.ll
Fangrui Song 2208c97c1b [Hexagon,test] Change llc -march= to -mtriple=
Similar to 806761a7629df268c8aed49657aeccffa6bca449

-mtriple= specifies the full target triple while -march= merely sets the
architecture part of the default target triple, leaving a target triple which
may not make sense.

Therefore, -march= is error-prone and not recommended for tests without a target
triple. The issue has been benign as we recognize $unknown-apple-darwin as ELF instead
of rejecting it outrightly.
2024-12-15 10:20:22 -08:00

41 lines
1.2 KiB
LLVM

; RUN: llc -mtriple=hexagon -enable-pipeliner < %s
; REQUIRES: asserts
; Check that a dead REG_SEQUENCE doesn't ICE.
; Function Attrs: nounwind
define void @f0(ptr nocapture %a0, i32 %a1) #0 {
b0:
%v0 = mul nsw i32 %a1, 4
%v1 = icmp sgt i32 %v0, 0
br i1 %v1, label %b1, label %b2
b1: ; preds = %b1, %b0
%v2 = phi i32 [ %v11, %b1 ], [ 0, %b0 ]
%v3 = load i32, ptr null, align 4
%v4 = zext i32 %v3 to i64
%v6 = load i32, ptr %a0, align 4
%v7 = zext i32 %v6 to i64
%v8 = shl nuw i64 %v7, 32
%v9 = or i64 %v8, %v4
%v10 = tail call i64 @llvm.hexagon.M2.vdmacs.s0(i64 0, i64 %v9, i64 %v9)
%v11 = add nsw i32 %v2, 4
%v12 = icmp slt i32 %v11, %v0
br i1 %v12, label %b1, label %b2
b2: ; preds = %b1, %b0
%v13 = phi i64 [ 0, %b0 ], [ %v10, %b1 ]
%v14 = tail call i64 @llvm.hexagon.S2.asr.r.vw(i64 %v13, i32 6)
store i64 %v14, ptr null, align 8
unreachable
}
; Function Attrs: nounwind readnone
declare i64 @llvm.hexagon.M2.vdmacs.s0(i64, i64, i64) #1
; Function Attrs: nounwind readnone
declare i64 @llvm.hexagon.S2.asr.r.vw(i64, i32) #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }