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llvm-mirror/test/CodeGen/X86/fast-isel-constrain-store-indexreg.ll
Pete Cooper 5b7d6ac920 [X86 fast-isel] Constrain the index reg class to not include SP.
The index reg on instructions with complex address modes is a GPR64_NOSP.  Constrain it to appease the machine verifier.

llvm-svn: 236557
2015-05-05 23:41:53 +00:00

26 lines
839 B
LLVM

; RUN: llc %s -o - -verify-machineinstrs | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-unknown"
@TheArray = external global [100000 x double], align 16
; This test ensures, via the machine verifier, that the register class for the
; index of the double store is correctly constrained to not include SP.
; CHECK: movsd
define i32 @main(i32* %i, double %tmpv) {
bb:
br label %bb7
bb7: ; preds = %bb7, %bb
%storemerge = phi i32 [ 0, %bb ], [ %tmp19, %bb7 ]
%tmp15 = zext i32 %storemerge to i64
%tmp16 = getelementptr inbounds [100000 x double], [100000 x double]* @TheArray, i64 0, i64 %tmp15
store double %tmpv, double* %tmp16, align 8
%tmp18 = load i32, i32* %i, align 4
%tmp19 = add i32 %tmp18, 1
br label %bb7
}