diff options
Diffstat (limited to 'test/CodeGen/SystemZ/bswap-03.ll')
| -rw-r--r-- | test/CodeGen/SystemZ/bswap-03.ll | 103 |
1 files changed, 96 insertions, 7 deletions
diff --git a/test/CodeGen/SystemZ/bswap-03.ll b/test/CodeGen/SystemZ/bswap-03.ll index 2e6bcdce2651..d9e5ad1b52f6 100644 --- a/test/CodeGen/SystemZ/bswap-03.ll +++ b/test/CodeGen/SystemZ/bswap-03.ll @@ -6,7 +6,7 @@ declare i64 @llvm.bswap.i64(i64 %a) ; Check LRVG with no displacement. define i64 @f1(i64 *%src) { -; CHECK: f1: +; CHECK-LABEL: f1: ; CHECK: lrvg %r2, 0(%r2) ; CHECK: br %r14 %a = load i64 *%src @@ -16,7 +16,7 @@ define i64 @f1(i64 *%src) { ; Check the high end of the aligned LRVG range. define i64 @f2(i64 *%src) { -; CHECK: f2: +; CHECK-LABEL: f2: ; CHECK: lrvg %r2, 524280(%r2) ; CHECK: br %r14 %ptr = getelementptr i64 *%src, i64 65535 @@ -28,7 +28,7 @@ define i64 @f2(i64 *%src) { ; Check the next doubleword up, which needs separate address logic. ; Other sequences besides this one would be OK. define i64 @f3(i64 *%src) { -; CHECK: f3: +; CHECK-LABEL: f3: ; CHECK: agfi %r2, 524288 ; CHECK: lrvg %r2, 0(%r2) ; CHECK: br %r14 @@ -40,7 +40,7 @@ define i64 @f3(i64 *%src) { ; Check the high end of the negative aligned LRVG range. define i64 @f4(i64 *%src) { -; CHECK: f4: +; CHECK-LABEL: f4: ; CHECK: lrvg %r2, -8(%r2) ; CHECK: br %r14 %ptr = getelementptr i64 *%src, i64 -1 @@ -51,7 +51,7 @@ define i64 @f4(i64 *%src) { ; Check the low end of the LRVG range. define i64 @f5(i64 *%src) { -; CHECK: f5: +; CHECK-LABEL: f5: ; CHECK: lrvg %r2, -524288(%r2) ; CHECK: br %r14 %ptr = getelementptr i64 *%src, i64 -65536 @@ -63,7 +63,7 @@ define i64 @f5(i64 *%src) { ; Check the next doubleword down, which needs separate address logic. ; Other sequences besides this one would be OK. define i64 @f6(i64 *%src) { -; CHECK: f6: +; CHECK-LABEL: f6: ; CHECK: agfi %r2, -524296 ; CHECK: lrvg %r2, 0(%r2) ; CHECK: br %r14 @@ -75,7 +75,7 @@ define i64 @f6(i64 *%src) { ; Check that LRVG allows an index. define i64 @f7(i64 %src, i64 %index) { -; CHECK: f7: +; CHECK-LABEL: f7: ; CHECK: lrvg %r2, 524287({{%r3,%r2|%r2,%r3}}) ; CHECK: br %r14 %add1 = add i64 %src, %index @@ -85,3 +85,92 @@ define i64 @f7(i64 %src, i64 %index) { %swapped = call i64 @llvm.bswap.i64(i64 %a) ret i64 %swapped } + +; Check that volatile accesses do not use LRVG, which might access the +; storage multple times. +define i64 @f8(i64 *%src) { +; CHECK-LABEL: f8: +; CHECK: lg [[REG:%r[0-5]]], 0(%r2) +; CHECK: lrvgr %r2, [[REG]] +; CHECK: br %r14 + %a = load volatile i64 *%src + %swapped = call i64 @llvm.bswap.i64(i64 %a) + ret i64 %swapped +} + +; Test a case where we spill the source of at least one LRVGR. We want +; to use LRVG if possible. +define void @f9(i64 *%ptr) { +; CHECK-LABEL: f9: +; CHECK: lrvg {{%r[0-9]+}}, 160(%r15) +; CHECK: br %r14 + %val0 = load volatile i64 *%ptr + %val1 = load volatile i64 *%ptr + %val2 = load volatile i64 *%ptr + %val3 = load volatile i64 *%ptr + %val4 = load volatile i64 *%ptr + %val5 = load volatile i64 *%ptr + %val6 = load volatile i64 *%ptr + %val7 = load volatile i64 *%ptr + %val8 = load volatile i64 *%ptr + %val9 = load volatile i64 *%ptr + %val10 = load volatile i64 *%ptr + %val11 = load volatile i64 *%ptr + %val12 = load volatile i64 *%ptr + %val13 = load volatile i64 *%ptr + %val14 = load volatile i64 *%ptr + %val15 = load volatile i64 *%ptr + + %swapped0 = call i64 @llvm.bswap.i64(i64 %val0) + %swapped1 = call i64 @llvm.bswap.i64(i64 %val1) + %swapped2 = call i64 @llvm.bswap.i64(i64 %val2) + %swapped3 = call i64 @llvm.bswap.i64(i64 %val3) + %swapped4 = call i64 @llvm.bswap.i64(i64 %val4) + %swapped5 = call i64 @llvm.bswap.i64(i64 %val5) + %swapped6 = call i64 @llvm.bswap.i64(i64 %val6) + %swapped7 = call i64 @llvm.bswap.i64(i64 %val7) + %swapped8 = call i64 @llvm.bswap.i64(i64 %val8) + %swapped9 = call i64 @llvm.bswap.i64(i64 %val9) + %swapped10 = call i64 @llvm.bswap.i64(i64 %val10) + %swapped11 = call i64 @llvm.bswap.i64(i64 %val11) + %swapped12 = call i64 @llvm.bswap.i64(i64 %val12) + %swapped13 = call i64 @llvm.bswap.i64(i64 %val13) + %swapped14 = call i64 @llvm.bswap.i64(i64 %val14) + %swapped15 = call i64 @llvm.bswap.i64(i64 %val15) + + store volatile i64 %val0, i64 *%ptr + store volatile i64 %val1, i64 *%ptr + store volatile i64 %val2, i64 *%ptr + store volatile i64 %val3, i64 *%ptr + store volatile i64 %val4, i64 *%ptr + store volatile i64 %val5, i64 *%ptr + store volatile i64 %val6, i64 *%ptr + store volatile i64 %val7, i64 *%ptr + store volatile i64 %val8, i64 *%ptr + store volatile i64 %val9, i64 *%ptr + store volatile i64 %val10, i64 *%ptr + store volatile i64 %val11, i64 *%ptr + store volatile i64 %val12, i64 *%ptr + store volatile i64 %val13, i64 *%ptr + store volatile i64 %val14, i64 *%ptr + store volatile i64 %val15, i64 *%ptr + + store volatile i64 %swapped0, i64 *%ptr + store volatile i64 %swapped1, i64 *%ptr + store volatile i64 %swapped2, i64 *%ptr + store volatile i64 %swapped3, i64 *%ptr + store volatile i64 %swapped4, i64 *%ptr + store volatile i64 %swapped5, i64 *%ptr + store volatile i64 %swapped6, i64 *%ptr + store volatile i64 %swapped7, i64 *%ptr + store volatile i64 %swapped8, i64 *%ptr + store volatile i64 %swapped9, i64 *%ptr + store volatile i64 %swapped10, i64 *%ptr + store volatile i64 %swapped11, i64 *%ptr + store volatile i64 %swapped12, i64 *%ptr + store volatile i64 %swapped13, i64 *%ptr + store volatile i64 %swapped14, i64 *%ptr + store volatile i64 %swapped15, i64 *%ptr + + ret void +} |