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llvm-mirror/test/CodeGen/Thumb2/aligned-constants.ll
Dan Gohman a72e83c26e [MC] Use .p2align instead of .align
For historic reasons, the behavior of .align differs between targets.
Fortunately, there are alternatives, .p2align and .balign, which make the
interpretation of the parameter explicit, and which behave consistently across
targets.

This patch teaches MC to use .p2align instead of .align, so that people reading
code for multiple architectures don't have to remember which way each platform
does its .align directive.

Differential Revision: http://reviews.llvm.org/D16549

llvm-svn: 258750
2016-01-26 00:03:25 +00:00

27 lines
864 B
LLVM

; RUN: llc < %s -mcpu=cortex-a8 | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
target triple = "thumbv7-apple-ios"
; The double in the constant pool is 8-byte aligned, forcing the function
; alignment.
; CHECK: .p2align 3
; CHECK: func
;
; Constant pool with 8-byte entry before 4-byte entry:
; CHECK: .p2align 3
; CHECK: LCPI
; CHECK: .long 2370821947
; CHECK: .long 1080815255
; CHECK: LCPI
; CHECK: .long 1123477881
define void @func(float* nocapture %x, double* nocapture %y) nounwind ssp {
entry:
%0 = load float, float* %x, align 4
%add = fadd float %0, 0x405EDD2F20000000
store float %add, float* %x, align 4
%1 = load double, double* %y, align 4
%add1 = fadd double %1, 2.234560e+02
store double %add1, double* %y, align 4
ret void
}