f1987c74ee
Similar to 806761a7629df268c8aed49657aeccffa6bca449 -mtriple= specifies the full target triple while -march= merely sets the architecture part of the default target triple (e.g. Windows, macOS), 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 xcore-apple-darwin as ELF instead of rejecting it outrightly.
33 lines
964 B
LLVM
33 lines
964 B
LLVM
; RUN: llc < %s -mtriple=xcore | FileCheck %s
|
|
|
|
; Optimize memcpy to __memcpy_4 if src, dst and size are all 4 byte aligned.
|
|
define void @f1(ptr %dst, ptr %src, i32 %n) nounwind {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: bl __memcpy_4
|
|
entry:
|
|
%0 = shl i32 %n, 2
|
|
call void @llvm.memcpy.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 %0, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; Can't optimize - size is not a multiple of 4.
|
|
define void @f2(ptr %dst, ptr %src, i32 %n) nounwind {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: bl memcpy
|
|
entry:
|
|
call void @llvm.memcpy.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 %n, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; Can't optimize - alignment is not a multiple of 4.
|
|
define void @f3(ptr %dst, ptr %src, i32 %n) nounwind {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: bl memcpy
|
|
entry:
|
|
%0 = shl i32 %n, 2
|
|
call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 2 %src, i32 %0, i1 false)
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
|