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comparison test/CodeGen/X86/fp-stack-ret.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
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-1:000000000000 0:95c75e76d11b
1 ; RUN: llc < %s -mtriple=i686-apple-darwin8 -mcpu=yonah -march=x86 | FileCheck %s
2
3 ; These testcases shouldn't require loading into an XMM register then storing
4 ; to memory, then reloading into an FPStack reg.
5
6 ; CHECK: test1
7 ; CHECK: fldl
8 ; CHECK-NEXT: ret
9 define double @test1(double *%P) {
10 %A = load double* %P
11 ret double %A
12 }
13
14 ; fastcc should return a value
15 ; CHECK: test2
16 ; CHECK-NOT: xmm
17 ; CHECK: ret
18 define fastcc double @test2(<2 x double> %A) {
19 %B = extractelement <2 x double> %A, i32 0
20 ret double %B
21 }
22
23 ; CHECK: test3
24 ; CHECK: sub{{.*}}%esp
25 ; CHECK-NOT: xmm
26 define fastcc double @test3(<4 x float> %A) {
27 %B = bitcast <4 x float> %A to <2 x double>
28 %C = call fastcc double @test2(<2 x double> %B)
29 ret double %C
30 }
31
32 ; Clear the stack when not using a return value.
33 ; CHECK: test4
34 ; CHECK: call
35 ; CHECK: fstp
36 ; CHECK: ret
37 define void @test4(double *%P) {
38 %A = call double @test1(double *%P)
39 ret void
40 }