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.
70 lines
2.2 KiB
LLVM
70 lines
2.2 KiB
LLVM
; Test variable-sized allocas and addresses based on them in cases where
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; stack arguments are needed.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-A
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-B
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-C
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-D
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-FP
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declare i64 @bar(ptr %a, ptr %b, ptr %c, ptr %d, ptr %e, i64 %f, i64 %g)
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; Allocate %length bytes and take addresses based on the result.
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; There are two stack arguments, so an offset of 160 + 2 * 8 == 176
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; is added to the copy of %r15.
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;
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; NOTE: 'la %r0, 177(%r1)' is actually an expected fail as it would
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; be better (and possible) to load into %r3 directly.
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;
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define i64 @f1(i64 %length, i64 %index) {
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; FIXME: a better sequence would be:
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;
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; lgr %r1, %r15
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; sgr %r1, %r2
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; nill %r1, 0xfff8
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; lgr %r15, %r1
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;
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; CHECK-LABEL: f1:
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; CHECK-DAG: la [[REG1:%r[0-5]]], 7(%r2)
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; CHECK-DAG: nill [[REG1]], 65528
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; CHECK-DAG: lgr [[REG2:%r[0-5]]], %r15
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; CHECK: sgr [[REG2]], [[REG1]]
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; CHECK: lgr %r15, [[REG2]]
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;
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; CHECK-A-LABEL: f1:
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; CHECK-A-DAG: lgr %r15, %r1
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; CHECK-A-DAG: la %r2, 176(%r1)
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;
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; CHECK-B-LABEL: f1:
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; CHECK-B: lgr %r15, %r1
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; CHECK-B: la %r0, 177(%r1)
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;
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; CHECK-C-LABEL: f1:
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; CHECK-C: lgr %r15, %r1
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; CHECK-C: la %r4, 4095({{%r3,%r1|%r1,%r3}})
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;
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; CHECK-D-LABEL: f1:
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; CHECK-D: lgr %r15, %r1
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; CHECK-D: lay %r5, 4096({{%r3,%r1|%r1,%r3}})
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;
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; CHECK-E-LABEL: f1:
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; CHECK-E: lgr %r15, %r1
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; CHECK-E: lay %r6, 4271({{%r3,%r1|%r1,%r3}})
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;
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; CHECK-FP-LABEL: f1:
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; CHECK-FP: lgr %r11, %r15
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; CHECK-FP: lmg %r6, %r15, 224(%r11)
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%a = alloca i8, i64 %length
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%b = getelementptr i8, ptr %a, i64 1
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%cindex = add i64 %index, 3919
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%c = getelementptr i8, ptr %a, i64 %cindex
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%dindex = add i64 %index, 3920
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%d = getelementptr i8, ptr %a, i64 %dindex
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%eindex = add i64 %index, 4095
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%e = getelementptr i8, ptr %a, i64 %eindex
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%count = call i64 @bar(ptr %a, ptr %b, ptr %c, ptr %d, ptr %e, i64 0, i64 0)
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%res = add i64 %count, 1
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ret i64 %res
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}
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