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TheRock/compiler/amd-llvm/llvm/test/CodeGen/PowerPC/ppc-redzone-alignment-bug.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

33 lines
1.0 KiB
LLVM

; Note the formula for negative number alignment calculation should be y = x & ~(n-1) rather than y = (x + (n-1)) & ~(n-1).
; after patch https://reviews.llvm.org/D34337, we could save 16 bytes in the best case.
; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s -check-prefix=CHECK-BE
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s -check-prefix=CHECK-LE
define signext i32 @bar(i32 signext %ii) {
entry:
%0 = tail call i32 asm sideeffect "add $0, $1, $2\0A", "=r,r,r,~{f14},~{r15},~{v20}"(i32 %ii, i32 10)
ret i32 %0
; Before the fix by patch D34337:
; stdu 1, -544(1)
; std 15, 264(1)
; stfd 14, 400(1)
; stdu 1, -560(1)
; std 15, 280(1)
; stfd 14, 416(1)
; After the fix by patch D34337:
; CHECK-LE: stdu 1, -528(1)
; CHECK-LE:std 15, 248(1)
; CHECK-LE:stfd 14, 384(1)
; CHECK-BE: stdu 1, -544(1)
; CHECK-BE:std 15, 264(1)
; CHECK-BE:stfd 14, 400(1)
}
define signext i32 @foo() {
entry:
%call = tail call signext i32 @bar(i32 signext 5)
ret i32 %call
}