llvm/test/Transforms/GlobalOpt/2008-04-26-SROA-Global-Align.ll
Chris Lattner 998182b380 When SRoA'ing a global variable, make sure the new globals get the
appropriate alignment.  This fixes a miscompilation of 252.eon on
x86-64 (rdar://5891920).

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50308 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-26 07:40:11 +00:00

33 lines
1.3 KiB
LLVM

; Verify that when @G is SROA'd that the new globals have correct
; alignments. Elements 0 and 2 must be 16-byte aligned, and element
; 1 must be at least 8 byte aligned (but could be more).
; RUN: llvm-as < %s | opt -globalopt | llvm-dis | grep {@G.0 = internal global .*align 16}
; RUN: llvm-as < %s | opt -globalopt | llvm-dis | grep {@G.1 = internal global .*align 8}
; RUN: llvm-as < %s | opt -globalopt | llvm-dis | grep {@G.2 = internal global .*align 16}
; rdar://5891920
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-apple-darwin8"
%T = type { double, double, double }
@G = internal global %T zeroinitializer, align 16
define void @test() {
store double 1.0, double* getelementptr (%T* @G, i32 0, i32 0), align 16
store double 2.0, double* getelementptr (%T* @G, i32 0, i32 1), align 8
store double 3.0, double* getelementptr (%T* @G, i32 0, i32 2), align 16
ret void
}
define double @test2() {
%V1 = load double* getelementptr (%T* @G, i32 0, i32 0), align 16
%V2 = load double* getelementptr (%T* @G, i32 0, i32 1), align 8
%V3 = load double* getelementptr (%T* @G, i32 0, i32 2), align 16
%R = add double %V1, %V2
%R2 = add double %R, %V3
ret double %R2
}