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.
191 lines
5.0 KiB
LLVM
191 lines
5.0 KiB
LLVM
; Test STOCs that are presented as selects.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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; Run the test again to make sure it still works the same even
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; in the presence of the load-store-on-condition-2 facility.
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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declare void @foo(ptr)
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; Test the simple case, with the loaded value first.
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define void @f1(ptr %ptr, i32 %alt, i32 %limit) {
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; CHECK-LABEL: f1:
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %orig, i32 %alt
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store i32 %res, ptr %ptr
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ret void
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}
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; ...and with the loaded value second
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define void @f2(ptr %ptr, i32 %alt, i32 %limit) {
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; CHECK-LABEL: f2:
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; CHECK: clfi %r4, 42
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; CHECK: stocl %r3, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %alt, i32 %orig
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store i32 %res, ptr %ptr
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ret void
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}
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; Test cases where the value is explicitly sign-extended to 64 bits, with the
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; loaded value first.
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define void @f3(ptr %ptr, i64 %alt, i32 %limit) {
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; CHECK-LABEL: f3:
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%ext = sext i32 %orig to i64
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%res = select i1 %cond, i64 %ext, i64 %alt
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%trunc = trunc i64 %res to i32
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store i32 %trunc, ptr %ptr
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ret void
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}
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; ...and with the loaded value second
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define void @f4(ptr %ptr, i64 %alt, i32 %limit) {
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; CHECK-LABEL: f4:
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; CHECK: clfi %r4, 42
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; CHECK: stocl %r3, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%ext = sext i32 %orig to i64
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%res = select i1 %cond, i64 %alt, i64 %ext
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%trunc = trunc i64 %res to i32
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store i32 %trunc, ptr %ptr
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ret void
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}
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; Test cases where the value is explicitly zero-extended to 32 bits, with the
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; loaded value first.
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define void @f5(ptr %ptr, i64 %alt, i32 %limit) {
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; CHECK-LABEL: f5:
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%ext = zext i32 %orig to i64
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%res = select i1 %cond, i64 %ext, i64 %alt
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%trunc = trunc i64 %res to i32
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store i32 %trunc, ptr %ptr
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ret void
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}
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; ...and with the loaded value second
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define void @f6(ptr %ptr, i64 %alt, i32 %limit) {
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; CHECK-LABEL: f6:
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; CHECK: clfi %r4, 42
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; CHECK: stocl %r3, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%ext = zext i32 %orig to i64
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%res = select i1 %cond, i64 %alt, i64 %ext
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%trunc = trunc i64 %res to i32
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store i32 %trunc, ptr %ptr
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ret void
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}
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; Check the high end of the aligned STOC range.
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define void @f7(ptr %base, i32 %alt, i32 %limit) {
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; CHECK-LABEL: f7:
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, 524284(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %base, i64 131071
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %orig, i32 %alt
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store i32 %res, ptr %ptr
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ret void
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}
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; Check the next word up. Other sequences besides this one would be OK.
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define void @f8(ptr %base, i32 %alt, i32 %limit) {
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; CHECK-LABEL: f8:
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; CHECK: agfi %r2, 524288
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %base, i64 131072
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %orig, i32 %alt
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store i32 %res, ptr %ptr
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ret void
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}
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; Check the low end of the STOC range.
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define void @f9(ptr %base, i32 %alt, i32 %limit) {
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; CHECK-LABEL: f9:
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, -524288(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %base, i64 -131072
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %orig, i32 %alt
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store i32 %res, ptr %ptr
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ret void
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}
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; Check the next word down, with the same comments as f8.
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define void @f10(ptr %base, i32 %alt, i32 %limit) {
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; CHECK-LABEL: f10:
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; CHECK: agfi %r2, -524292
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; CHECK: clfi %r4, 42
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; CHECK: stoche %r3, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %base, i64 -131073
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %orig, i32 %alt
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store i32 %res, ptr %ptr
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ret void
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}
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; Try a frame index base.
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define void @f11(i32 %alt, i32 %limit) {
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; CHECK-LABEL: f11:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: stoche {{%r[0-9]+}}, {{[0-9]+}}(%r15)
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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%ptr = alloca i32
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call void @foo(ptr %ptr)
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%cond = icmp ult i32 %limit, 42
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%orig = load i32, ptr %ptr
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%res = select i1 %cond, i32 %orig, i32 %alt
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store i32 %res, ptr %ptr
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call void @foo(ptr %ptr)
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ret void
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}
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; Test that conditionally-executed stores do not use STOC, since STOC
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; is allowed to trap even when the condition is false.
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define void @f12(i32 %a, i32 %b, ptr %dest) {
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; CHECK-LABEL: f12:
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; CHECK-NOT: stoc
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; CHECK: br %r14
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entry:
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%cmp = icmp ule i32 %a, %b
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br i1 %cmp, label %store, label %exit
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store:
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store i32 %b, ptr %dest
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br label %exit
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exit:
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ret void
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}
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