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TheRock/compiler/amd-llvm/llvm/test/CodeGen/Hexagon/imm-range-check.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

27 lines
1008 B
LLVM

; RUN: llc -mtriple=hexagon -filetype=obj < %s | llvm-objdump -d - | FileCheck %s
; The output assembly (textual) contains the instruction
; r29 = add(r29,#4294967136)
; The value 4294967136 is -160 when interpreted as a signed 32-bit
; integer, so it fits in the range of the immediate operand without
; a constant extender. The range check in HexagonInstrInfo was putting
; the operand value into an int variable, reporting no need for an
; extender. This resulted in a packet with 4 instructions, including
; the "add". The corresponding check in HexagonMCInstrInfo was using
; an int64_t variable, causing an extender to be emitted when lowering
; to MCInst, and resulting in a packet with 5 instructions.
; Check that this doesn't crash.
; CHECK: r29 = add(r29,#-0xa0)
target triple = "hexagon-unknown-linux-gnu"
define float @f0() {
b0:
%v0 = alloca i8, i32 0, align 1
%v1 = alloca float, i32 -42, align 4
%v2 = load float, ptr %v1, align 4
store i8 0, ptr %v0, align 1
ret float %v2
}