114 lines
2.2 KiB
LLVM
114 lines
2.2 KiB
LLVM
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; Test loading of 32-bit constants.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare void @foo(i32, i32, i32, i32)
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; Check 0.
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define i32 @f1() {
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; CHECK-LABEL: f1:
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; CHECK: lhi %r2, 0
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; CHECK: br %r14
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ret i32 0
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}
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; Check the high end of the LHI range.
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define i32 @f2() {
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; CHECK-LABEL: f2:
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; CHECK: lhi %r2, 32767
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; CHECK: br %r14
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ret i32 32767
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}
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; Check the next value up, which must use LLILL instead.
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define i32 @f3() {
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; CHECK-LABEL: f3:
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; CHECK: llill %r2, 32768
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; CHECK: br %r14
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ret i32 32768
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}
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; Check the high end of the LLILL range.
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define i32 @f4() {
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; CHECK-LABEL: f4:
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; CHECK: llill %r2, 65535
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; CHECK: br %r14
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ret i32 65535
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}
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; Check the first useful LLILH value, which is the next one up.
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define i32 @f5() {
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; CHECK-LABEL: f5:
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; CHECK: llilh %r2, 1
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; CHECK: br %r14
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ret i32 65536
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}
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; Check the first useful IILF value, which is the next one up again.
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define i32 @f6() {
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; CHECK-LABEL: f6:
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; CHECK: iilf %r2, 65537
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; CHECK: br %r14
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ret i32 65537
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}
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; Check the high end of the LLILH range.
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define i32 @f7() {
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; CHECK-LABEL: f7:
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; CHECK: llilh %r2, 65535
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; CHECK: br %r14
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ret i32 -65536
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}
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; Check the next value up, which must use IILF.
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define i32 @f8() {
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; CHECK-LABEL: f8:
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; CHECK: iilf %r2, 4294901761
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; CHECK: br %r14
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ret i32 -65535
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}
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; Check the highest useful IILF value, 0xffff7fff
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define i32 @f9() {
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; CHECK-LABEL: f9:
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; CHECK: iilf %r2, 4294934527
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; CHECK: br %r14
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ret i32 -32769
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}
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; Check the next value up, which should use LHI.
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define i32 @f10() {
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; CHECK-LABEL: f10:
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; CHECK: lhi %r2, -32768
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; CHECK: br %r14
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ret i32 -32768
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}
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; Check -1.
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define i32 @f11() {
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; CHECK-LABEL: f11:
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; CHECK: lhi %r2, -1
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; CHECK: br %r14
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ret i32 -1
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}
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; Check that constant loads are rematerialized.
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define i32 @f12() {
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; CHECK-LABEL: f12:
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; CHECK-DAG: lhi %r2, 42
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; CHECK-DAG: llill %r3, 32768
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; CHECK-DAG: llilh %r4, 1
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; CHECK-DAG: iilf %r5, 65537
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; CHECK: brasl %r14, foo@PLT
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; CHECK-DAG: lhi %r2, 42
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; CHECK-DAG: llill %r3, 32768
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; CHECK-DAG: llilh %r4, 1
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; CHECK-DAG: iilf %r5, 65537
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; CHECK: brasl %r14, foo@PLT
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; CHECK: lhi %r2, 42
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; CHECK: br %r14
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call void @foo(i32 42, i32 32768, i32 65536, i32 65537)
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call void @foo(i32 42, i32 32768, i32 65536, i32 65537)
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ret i32 42
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}
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