[SystemZ] Try to fold shifts into TMxx

[oota-llvm.git] / test / CodeGen / SystemZ / bswap-03.ll

diff --git a/test/CodeGen/SystemZ/bswap-03.ll b/test/CodeGen/SystemZ/bswap-03.ll
index 2e6bcdce265159498ff01d59306911781337ec41..d9e5ad1b52f6efbb1a957d4244c6d20ad3669c97 100644 (file)
--- 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
+}