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1431b3c2f5
This adds all CodeGen tests for the SystemZ target. This version of the patch incorporates feedback from a review by Sean Silva. Thanks to all reviewers! Patch by Richard Sandiford. llvm-svn: 181204
103 lines
2.0 KiB
LLVM
103 lines
2.0 KiB
LLVM
; Test moves of integers to 4-byte memory locations.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check moves of zero.
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define void @f1(i32 *%a) {
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; CHECK: f1:
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; CHECK: mvhi 0(%r2), 0
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; CHECK: br %r14
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store i32 0, i32 *%a
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ret void
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}
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; Check the high end of the signed 16-bit range.
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define void @f2(i32 *%a) {
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; CHECK: f2:
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; CHECK: mvhi 0(%r2), 32767
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; CHECK: br %r14
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store i32 32767, i32 *%a
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ret void
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}
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; Check the next value up, which can't use MVHI.
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define void @f3(i32 *%a) {
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; CHECK: f3:
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; CHECK-NOT: mvhi
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; CHECK: br %r14
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store i32 32768, i32 *%a
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ret void
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}
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; Check moves of -1.
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define void @f4(i32 *%a) {
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; CHECK: f4:
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; CHECK: mvhi 0(%r2), -1
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; CHECK: br %r14
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store i32 -1, i32 *%a
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ret void
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}
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; Check the low end of the MVHI range.
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define void @f5(i32 *%a) {
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; CHECK: f5:
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; CHECK: mvhi 0(%r2), -32768
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; CHECK: br %r14
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store i32 -32768, i32 *%a
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ret void
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}
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; Check the next value down, which can't use MVHI.
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define void @f6(i32 *%a) {
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; CHECK: f6:
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; CHECK-NOT: mvhi
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; CHECK: br %r14
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store i32 -32769, i32 *%a
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ret void
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}
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; Check the high end of the MVHI range.
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define void @f7(i32 *%a) {
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; CHECK: f7:
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; CHECK: mvhi 4092(%r2), 42
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; CHECK: br %r14
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%ptr = getelementptr i32 *%a, i64 1023
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store i32 42, i32 *%ptr
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ret void
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}
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; Check the next word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f8(i32 *%a) {
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; CHECK: f8:
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; CHECK: aghi %r2, 4096
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; CHECK: mvhi 0(%r2), 42
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; CHECK: br %r14
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%ptr = getelementptr i32 *%a, i64 1024
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store i32 42, i32 *%ptr
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ret void
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}
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; Check negative displacements, which also need separate address logic.
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define void @f9(i32 *%a) {
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; CHECK: f9:
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; CHECK: aghi %r2, -4
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; CHECK: mvhi 0(%r2), 42
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; CHECK: br %r14
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%ptr = getelementptr i32 *%a, i64 -1
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store i32 42, i32 *%ptr
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ret void
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}
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; Check that MVHI does not allow an index
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define void @f10(i64 %src, i64 %index) {
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; CHECK: f10:
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; CHECK: agr %r2, %r3
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; CHECK: mvhi 0(%r2), 42
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; CHECK: br %r14
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%add = add i64 %src, %index
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%ptr = inttoptr i64 %add to i32 *
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store i32 42, i32 *%ptr
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ret void
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}
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