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.
132 lines
3.5 KiB
LLVM
132 lines
3.5 KiB
LLVM
; Test 32-bit byteswaps from memory to registers.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i32 @llvm.bswap.i32(i32 %a)
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; Check LRV with no displacement.
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define i32 @f1(ptr %src) {
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; CHECK-LABEL: f1:
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; CHECK: lrv %r2, 0(%r2)
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; CHECK: br %r14
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%a = load i32, ptr %src
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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}
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; Check the high end of the aligned LRV range.
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define i32 @f2(ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK: lrv %r2, 524284(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %src, i64 131071
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%a = load i32, ptr %ptr
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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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 i32 @f3(ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: agfi %r2, 524288
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; CHECK: lrv %r2, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %src, i64 131072
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%a = load i32, ptr %ptr
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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}
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; Check the high end of the negative aligned LRV range.
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define i32 @f4(ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: lrv %r2, -4(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %src, i64 -1
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%a = load i32, ptr %ptr
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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}
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; Check the low end of the LRV range.
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define i32 @f5(ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: lrv %r2, -524288(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %src, i64 -131072
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%a = load i32, ptr %ptr
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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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 i32 @f6(ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: agfi %r2, -524292
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; CHECK: lrv %r2, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i32, ptr %src, i64 -131073
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%a = load i32, ptr %ptr
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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}
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; Check that LRV allows an index.
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define i32 @f7(i64 %src, i64 %index) {
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; CHECK-LABEL: f7:
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; CHECK: lrv %r2, 524287({{%r3,%r2|%r2,%r3}})
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; CHECK: br %r14
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%add1 = add i64 %src, %index
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%add2 = add i64 %add1, 524287
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%ptr = inttoptr i64 %add2 to ptr
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%a = load i32, ptr %ptr
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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}
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; Test a case where we spill the source of at least one LRVR. We want
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; to use LRV if possible.
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define i32 @f8(ptr %ptr0) {
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; CHECK-LABEL: f8:
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; CHECK: lrv {{%r[0-9]+}}, 16{{[04]}}(%r15)
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; CHECK: br %r14
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%val0 = call i32 @foo()
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%val1 = call i32 @foo()
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%val2 = call i32 @foo()
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%val3 = call i32 @foo()
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%val4 = call i32 @foo()
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%val5 = call i32 @foo()
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%val6 = call i32 @foo()
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%val7 = call i32 @foo()
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%val8 = call i32 @foo()
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%val9 = call i32 @foo()
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%swapped0 = call i32 @llvm.bswap.i32(i32 %val0)
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%swapped1 = call i32 @llvm.bswap.i32(i32 %val1)
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%swapped2 = call i32 @llvm.bswap.i32(i32 %val2)
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%swapped3 = call i32 @llvm.bswap.i32(i32 %val3)
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%swapped4 = call i32 @llvm.bswap.i32(i32 %val4)
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%swapped5 = call i32 @llvm.bswap.i32(i32 %val5)
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%swapped6 = call i32 @llvm.bswap.i32(i32 %val6)
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%swapped7 = call i32 @llvm.bswap.i32(i32 %val7)
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%swapped8 = call i32 @llvm.bswap.i32(i32 %val8)
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%swapped9 = call i32 @llvm.bswap.i32(i32 %val9)
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%ret1 = add i32 %swapped0, %swapped1
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%ret2 = add i32 %ret1, %swapped2
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%ret3 = add i32 %ret2, %swapped3
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%ret4 = add i32 %ret3, %swapped4
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%ret5 = add i32 %ret4, %swapped5
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%ret6 = add i32 %ret5, %swapped6
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%ret7 = add i32 %ret6, %swapped7
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%ret8 = add i32 %ret7, %swapped8
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%ret9 = add i32 %ret8, %swapped9
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ret i32 %ret9
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}
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declare i32 @foo()
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