cd76f43b49
This prevents constant gep operands from being hoisted by the Constant Hoisting pass, leaving them to CodegenPrepare which can usually do a better job at splitting large offsets. This can, in general, improve performance and decrease codesize, especially for v6m where many constants have a high cost. Differential Revision: https://reviews.llvm.org/D104877
35 lines
1.8 KiB
LLVM
35 lines
1.8 KiB
LLVM
; RUN: opt -consthoist -S < %s | FileCheck %s
|
|
target triple = "thumbv6m-none-eabi"
|
|
|
|
%T = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
|
|
i32, i32, i32, i32, i32, i32 }
|
|
|
|
; Indices for GEPs should not be hoisted.
|
|
define i32 @test1(%T* %P) nounwind {
|
|
; CHECK-LABEL: @test1
|
|
; CHECK: %addr1 = getelementptr %T, %T* %P, i32 256, i32 256
|
|
; CHECK: %addr2 = getelementptr %T, %T* %P, i32 256, i32 256
|
|
%addr1 = getelementptr %T, %T* %P, i32 256, i32 256
|
|
%tmp1 = load i32, i32* %addr1
|
|
%addr2 = getelementptr %T, %T* %P, i32 256, i32 256
|
|
%tmp2 = load i32, i32* %addr2
|
|
%tmp4 = add i32 %tmp1, %tmp2
|
|
ret i32 %tmp4
|
|
}
|
|
|