a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
96 lines
2.3 KiB
LLVM
96 lines
2.3 KiB
LLVM
; Test subtractions of a sign-extended i16 from an i64 on z14.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
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declare i64 @foo()
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; Check SGH with no displacement.
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define i64 @f1(i64 %a, ptr %src) {
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; CHECK-LABEL: f1:
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; CHECK: sgh %r2, 0(%r3)
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; CHECK: br %r14
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%b = load i16, ptr %src
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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}
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; Check the high end of the aligned SGH range.
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define i64 @f2(i64 %a, ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK: sgh %r2, 524286(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %src, i64 262143
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%b = load i16, ptr %ptr
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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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 i64 @f3(i64 %a, ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: agfi %r3, 524288
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; CHECK: sgh %r2, 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %src, i64 262144
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%b = load i16, ptr %ptr
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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}
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; Check the high end of the negative aligned SGH range.
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define i64 @f4(i64 %a, ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: sgh %r2, -2(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %src, i64 -1
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%b = load i16, ptr %ptr
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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}
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; Check the low end of the SGH range.
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define i64 @f5(i64 %a, ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: sgh %r2, -524288(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %src, i64 -262144
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%b = load i16, ptr %ptr
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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}
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; Check the next word down, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define i64 @f6(i64 %a, ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: agfi %r3, -524290
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; CHECK: sgh %r2, 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %src, i64 -262145
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%b = load i16, ptr %ptr
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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}
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; Check that SGH allows an index.
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define i64 @f7(i64 %a, i64 %src, i64 %index) {
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; CHECK-LABEL: f7:
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; CHECK: sgh %r2, 524284({{%r4,%r3|%r3,%r4}})
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; CHECK: br %r14
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%add1 = add i64 %src, %index
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%add2 = add i64 %add1, 524284
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%ptr = inttoptr i64 %add2 to ptr
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%b = load i16, ptr %ptr
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%bext = sext i16 %b to i64
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%sub = sub i64 %a, %bext
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ret i64 %sub
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}
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