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Diffstat (limited to 'test/Analysis/DependenceAnalysis/Preliminary.ll')
| -rw-r--r-- | test/Analysis/DependenceAnalysis/Preliminary.ll | 469 |
1 files changed, 469 insertions, 0 deletions
diff --git a/test/Analysis/DependenceAnalysis/Preliminary.ll b/test/Analysis/DependenceAnalysis/Preliminary.ll new file mode 100644 index 000000000000..3ef63fd5592f --- /dev/null +++ b/test/Analysis/DependenceAnalysis/Preliminary.ll @@ -0,0 +1,469 @@ +; RUN: opt < %s -analyze -basicaa -indvars -da | FileCheck %s + +; This series of tests is more interesting when debugging is enabled. + +; ModuleID = 'Preliminary.bc' +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.6.0" + + +;; may alias +;; int p0(int n, int *A, int *B) { +;; A[0] = n; +;; return B[1]; + +define i32 @p0(i32 %n, i32* %A, i32* %B) nounwind uwtable ssp { +entry: + store i32 %n, i32* %A, align 4 + %arrayidx1 = getelementptr inbounds i32* %B, i64 1 + %0 = load i32* %arrayidx1, align 4 +; CHECK: da analyze - confused! + ret i32 %0 +} + + +;; no alias +;; int p1(int n, int *restrict A, int *restrict B) { +;; A[0] = n; +;; return B[1]; + +define i32 @p1(i32 %n, i32* noalias %A, i32* noalias %B) nounwind uwtable ssp { +entry: + store i32 %n, i32* %A, align 4 + %arrayidx1 = getelementptr inbounds i32* %B, i64 1 + %0 = load i32* %arrayidx1, align 4 +; CHECK: da analyze - none! + ret i32 %0 +} + +;; check loop nesting levels +;; for (long int i = 0; i < n; i++) +;; for (long int j = 0; j < n; j++) +;; for (long int k = 0; k < n; k++) +;; A[i][j][k] = ... +;; for (long int k = 0; k < n; k++) +;; ... = A[i + 3][j + 2][k + 1]; + +define void @p2(i64 %n, [100 x [100 x i64]]* %A, i64* %B) nounwind uwtable ssp { +entry: + %cmp10 = icmp sgt i64 %n, 0 + br i1 %cmp10, label %for.cond1.preheader, label %for.end26 + +for.cond1.preheader: ; preds = %for.inc24, %entry + %B.addr.012 = phi i64* [ %B.addr.1.lcssa, %for.inc24 ], [ %B, %entry ] + %i.011 = phi i64 [ %inc25, %for.inc24 ], [ 0, %entry ] + %cmp26 = icmp sgt i64 %n, 0 + br i1 %cmp26, label %for.cond4.preheader, label %for.inc24 + +for.cond4.preheader: ; preds = %for.inc21, %for.cond1.preheader + %B.addr.18 = phi i64* [ %B.addr.2.lcssa, %for.inc21 ], [ %B.addr.012, %for.cond1.preheader ] + %j.07 = phi i64 [ %inc22, %for.inc21 ], [ 0, %for.cond1.preheader ] + %cmp51 = icmp sgt i64 %n, 0 + br i1 %cmp51, label %for.body6, label %for.cond10.loopexit + +for.body6: ; preds = %for.body6, %for.cond4.preheader + %k.02 = phi i64 [ %inc, %for.body6 ], [ 0, %for.cond4.preheader ] + %arrayidx8 = getelementptr inbounds [100 x [100 x i64]]* %A, i64 %i.011, i64 %j.07, i64 %k.02 + store i64 %i.011, i64* %arrayidx8, align 8 + %inc = add nsw i64 %k.02, 1 + %cmp5 = icmp slt i64 %inc, %n + br i1 %cmp5, label %for.body6, label %for.cond10.loopexit + +for.cond10.loopexit: ; preds = %for.body6, %for.cond4.preheader + %cmp113 = icmp sgt i64 %n, 0 + br i1 %cmp113, label %for.body12, label %for.inc21 + +for.body12: ; preds = %for.body12, %for.cond10.loopexit + %k9.05 = phi i64 [ %inc19, %for.body12 ], [ 0, %for.cond10.loopexit ] + %B.addr.24 = phi i64* [ %incdec.ptr, %for.body12 ], [ %B.addr.18, %for.cond10.loopexit ] + %add = add nsw i64 %k9.05, 1 + %add13 = add nsw i64 %j.07, 2 + %add14 = add nsw i64 %i.011, 3 + %arrayidx17 = getelementptr inbounds [100 x [100 x i64]]* %A, i64 %add14, i64 %add13, i64 %add + %0 = load i64* %arrayidx17, align 8 +; CHECK: da analyze - flow [-3 -2]! + %incdec.ptr = getelementptr inbounds i64* %B.addr.24, i64 1 + store i64 %0, i64* %B.addr.24, align 8 + %inc19 = add nsw i64 %k9.05, 1 + %cmp11 = icmp slt i64 %inc19, %n + br i1 %cmp11, label %for.body12, label %for.inc21 + +for.inc21: ; preds = %for.body12, %for.cond10.loopexit + %B.addr.2.lcssa = phi i64* [ %B.addr.18, %for.cond10.loopexit ], [ %incdec.ptr, %for.body12 ] + %inc22 = add nsw i64 %j.07, 1 + %cmp2 = icmp slt i64 %inc22, %n + br i1 %cmp2, label %for.cond4.preheader, label %for.inc24 + +for.inc24: ; preds = %for.inc21, %for.cond1.preheader + %B.addr.1.lcssa = phi i64* [ %B.addr.012, %for.cond1.preheader ], [ %B.addr.2.lcssa, %for.inc21 ] + %inc25 = add nsw i64 %i.011, 1 + %cmp = icmp slt i64 %inc25, %n + br i1 %cmp, label %for.cond1.preheader, label %for.end26 + +for.end26: ; preds = %for.inc24, %entry + ret void +} + + +;; classify subscripts +;; for (long int i = 0; i < n; i++) +;; for (long int j = 0; j < n; j++) +;; for (long int k = 0; k < n; k++) +;; for (long int l = 0; l < n; l++) +;; for (long int m = 0; m < n; m++) +;; for (long int o = 0; o < n; o++) +;; for (long int p = 0; p < n; p++) +;; for (long int q = 0; q < n; q++) +;; for (long int r = 0; r < n; r++) +;; for (long int s = 0; s < n; s++) +;; for (long int u = 0; u < n; u++) +;; for (long int t = 0; t < n; t++) { +;; A[i - 3] [j] [2] [k-1] [2*l + 1] [m] [p + q] [r + s] = ... +;; ... = A[i + 3] [2] [u] [1-k] [3*l - 1] [o] [1 + n] [t + 2]; + +define void @p3(i64 %n, [100 x [100 x [100 x [100 x [100 x [100 x [100 x i64]]]]]]]* %A, i64* %B) nounwind uwtable ssp { +entry: + %cmp44 = icmp sgt i64 %n, 0 + br i1 %cmp44, label %for.cond1.preheader, label %for.end90 + +for.cond1.preheader: ; preds = %for.inc88, %entry + %B.addr.046 = phi i64* [ %B.addr.1.lcssa, %for.inc88 ], [ %B, %entry ] + %i.045 = phi i64 [ %inc89, %for.inc88 ], [ 0, %entry ] + %cmp240 = icmp sgt i64 %n, 0 + br i1 %cmp240, label %for.cond4.preheader, label %for.inc88 + +for.cond4.preheader: ; preds = %for.inc85, %for.cond1.preheader + %B.addr.142 = phi i64* [ %B.addr.2.lcssa, %for.inc85 ], [ %B.addr.046, %for.cond1.preheader ] + %j.041 = phi i64 [ %inc86, %for.inc85 ], [ 0, %for.cond1.preheader ] + %cmp536 = icmp sgt i64 %n, 0 + br i1 %cmp536, label %for.cond7.preheader, label %for.inc85 + +for.cond7.preheader: ; preds = %for.inc82, %for.cond4.preheader + %B.addr.238 = phi i64* [ %B.addr.3.lcssa, %for.inc82 ], [ %B.addr.142, %for.cond4.preheader ] + %k.037 = phi i64 [ %inc83, %for.inc82 ], [ 0, %for.cond4.preheader ] + %cmp832 = icmp sgt i64 %n, 0 + br i1 %cmp832, label %for.cond10.preheader, label %for.inc82 + +for.cond10.preheader: ; preds = %for.inc79, %for.cond7.preheader + %B.addr.334 = phi i64* [ %B.addr.4.lcssa, %for.inc79 ], [ %B.addr.238, %for.cond7.preheader ] + %l.033 = phi i64 [ %inc80, %for.inc79 ], [ 0, %for.cond7.preheader ] + %cmp1128 = icmp sgt i64 %n, 0 + br i1 %cmp1128, label %for.cond13.preheader, label %for.inc79 + +for.cond13.preheader: ; preds = %for.inc76, %for.cond10.preheader + %B.addr.430 = phi i64* [ %B.addr.5.lcssa, %for.inc76 ], [ %B.addr.334, %for.cond10.preheader ] + %m.029 = phi i64 [ %inc77, %for.inc76 ], [ 0, %for.cond10.preheader ] + %cmp1424 = icmp sgt i64 %n, 0 + br i1 %cmp1424, label %for.cond16.preheader, label %for.inc76 + +for.cond16.preheader: ; preds = %for.inc73, %for.cond13.preheader + %B.addr.526 = phi i64* [ %B.addr.6.lcssa, %for.inc73 ], [ %B.addr.430, %for.cond13.preheader ] + %o.025 = phi i64 [ %inc74, %for.inc73 ], [ 0, %for.cond13.preheader ] + %cmp1720 = icmp sgt i64 %n, 0 + br i1 %cmp1720, label %for.cond19.preheader, label %for.inc73 + +for.cond19.preheader: ; preds = %for.inc70, %for.cond16.preheader + %B.addr.622 = phi i64* [ %B.addr.7.lcssa, %for.inc70 ], [ %B.addr.526, %for.cond16.preheader ] + %p.021 = phi i64 [ %inc71, %for.inc70 ], [ 0, %for.cond16.preheader ] + %cmp2016 = icmp sgt i64 %n, 0 + br i1 %cmp2016, label %for.cond22.preheader, label %for.inc70 + +for.cond22.preheader: ; preds = %for.inc67, %for.cond19.preheader + %B.addr.718 = phi i64* [ %B.addr.8.lcssa, %for.inc67 ], [ %B.addr.622, %for.cond19.preheader ] + %q.017 = phi i64 [ %inc68, %for.inc67 ], [ 0, %for.cond19.preheader ] + %cmp2312 = icmp sgt i64 %n, 0 + br i1 %cmp2312, label %for.cond25.preheader, label %for.inc67 + +for.cond25.preheader: ; preds = %for.inc64, %for.cond22.preheader + %B.addr.814 = phi i64* [ %B.addr.9.lcssa, %for.inc64 ], [ %B.addr.718, %for.cond22.preheader ] + %r.013 = phi i64 [ %inc65, %for.inc64 ], [ 0, %for.cond22.preheader ] + %cmp268 = icmp sgt i64 %n, 0 + br i1 %cmp268, label %for.cond28.preheader, label %for.inc64 + +for.cond28.preheader: ; preds = %for.inc61, %for.cond25.preheader + %B.addr.910 = phi i64* [ %B.addr.10.lcssa, %for.inc61 ], [ %B.addr.814, %for.cond25.preheader ] + %s.09 = phi i64 [ %inc62, %for.inc61 ], [ 0, %for.cond25.preheader ] + %cmp294 = icmp sgt i64 %n, 0 + br i1 %cmp294, label %for.cond31.preheader, label %for.inc61 + +for.cond31.preheader: ; preds = %for.inc58, %for.cond28.preheader + %u.06 = phi i64 [ %inc59, %for.inc58 ], [ 0, %for.cond28.preheader ] + %B.addr.105 = phi i64* [ %B.addr.11.lcssa, %for.inc58 ], [ %B.addr.910, %for.cond28.preheader ] + %cmp321 = icmp sgt i64 %n, 0 + br i1 %cmp321, label %for.body33, label %for.inc58 + +for.body33: ; preds = %for.body33, %for.cond31.preheader + %t.03 = phi i64 [ %inc, %for.body33 ], [ 0, %for.cond31.preheader ] + %B.addr.112 = phi i64* [ %incdec.ptr, %for.body33 ], [ %B.addr.105, %for.cond31.preheader ] + %add = add nsw i64 %r.013, %s.09 + %add34 = add nsw i64 %p.021, %q.017 + %mul = shl nsw i64 %l.033, 1 + %add3547 = or i64 %mul, 1 + %sub = add nsw i64 %k.037, -1 + %sub36 = add nsw i64 %i.045, -3 + %arrayidx43 = getelementptr inbounds [100 x [100 x [100 x [100 x [100 x [100 x [100 x i64]]]]]]]* %A, i64 %sub36, i64 %j.041, i64 2, i64 %sub, i64 %add3547, i64 %m.029, i64 %add34, i64 %add + store i64 %i.045, i64* %arrayidx43, align 8 + %add44 = add nsw i64 %t.03, 2 + %add45 = add nsw i64 %n, 1 + %mul46 = mul nsw i64 %l.033, 3 + %sub47 = add nsw i64 %mul46, -1 + %sub48 = sub nsw i64 1, %k.037 + %add49 = add nsw i64 %i.045, 3 + %arrayidx57 = getelementptr inbounds [100 x [100 x [100 x [100 x [100 x [100 x [100 x i64]]]]]]]* %A, i64 %add49, i64 2, i64 %u.06, i64 %sub48, i64 %sub47, i64 %o.025, i64 %add45, i64 %add44 + %0 = load i64* %arrayidx57, align 8 +; CHECK: da analyze - flow [-6 * * => * * * * * * * *] splitable! +; CHECK: da analyze - split level = 3, iteration = 1! + %incdec.ptr = getelementptr inbounds i64* %B.addr.112, i64 1 + store i64 %0, i64* %B.addr.112, align 8 + %inc = add nsw i64 %t.03, 1 + %cmp32 = icmp slt i64 %inc, %n + br i1 %cmp32, label %for.body33, label %for.inc58 + +for.inc58: ; preds = %for.body33, %for.cond31.preheader + %B.addr.11.lcssa = phi i64* [ %B.addr.105, %for.cond31.preheader ], [ %incdec.ptr, %for.body33 ] + %inc59 = add nsw i64 %u.06, 1 + %cmp29 = icmp slt i64 %inc59, %n + br i1 %cmp29, label %for.cond31.preheader, label %for.inc61 + +for.inc61: ; preds = %for.inc58, %for.cond28.preheader + %B.addr.10.lcssa = phi i64* [ %B.addr.910, %for.cond28.preheader ], [ %B.addr.11.lcssa, %for.inc58 ] + %inc62 = add nsw i64 %s.09, 1 + %cmp26 = icmp slt i64 %inc62, %n + br i1 %cmp26, label %for.cond28.preheader, label %for.inc64 + +for.inc64: ; preds = %for.inc61, %for.cond25.preheader + %B.addr.9.lcssa = phi i64* [ %B.addr.814, %for.cond25.preheader ], [ %B.addr.10.lcssa, %for.inc61 ] + %inc65 = add nsw i64 %r.013, 1 + %cmp23 = icmp slt i64 %inc65, %n + br i1 %cmp23, label %for.cond25.preheader, label %for.inc67 + +for.inc67: ; preds = %for.inc64, %for.cond22.preheader + %B.addr.8.lcssa = phi i64* [ %B.addr.718, %for.cond22.preheader ], [ %B.addr.9.lcssa, %for.inc64 ] + %inc68 = add nsw i64 %q.017, 1 + %cmp20 = icmp slt i64 %inc68, %n + br i1 %cmp20, label %for.cond22.preheader, label %for.inc70 + +for.inc70: ; preds = %for.inc67, %for.cond19.preheader + %B.addr.7.lcssa = phi i64* [ %B.addr.622, %for.cond19.preheader ], [ %B.addr.8.lcssa, %for.inc67 ] + %inc71 = add nsw i64 %p.021, 1 + %cmp17 = icmp slt i64 %inc71, %n + br i1 %cmp17, label %for.cond19.preheader, label %for.inc73 + +for.inc73: ; preds = %for.inc70, %for.cond16.preheader + %B.addr.6.lcssa = phi i64* [ %B.addr.526, %for.cond16.preheader ], [ %B.addr.7.lcssa, %for.inc70 ] + %inc74 = add nsw i64 %o.025, 1 + %cmp14 = icmp slt i64 %inc74, %n + br i1 %cmp14, label %for.cond16.preheader, label %for.inc76 + +for.inc76: ; preds = %for.inc73, %for.cond13.preheader + %B.addr.5.lcssa = phi i64* [ %B.addr.430, %for.cond13.preheader ], [ %B.addr.6.lcssa, %for.inc73 ] + %inc77 = add nsw i64 %m.029, 1 + %cmp11 = icmp slt i64 %inc77, %n + br i1 %cmp11, label %for.cond13.preheader, label %for.inc79 + +for.inc79: ; preds = %for.inc76, %for.cond10.preheader + %B.addr.4.lcssa = phi i64* [ %B.addr.334, %for.cond10.preheader ], [ %B.addr.5.lcssa, %for.inc76 ] + %inc80 = add nsw i64 %l.033, 1 + %cmp8 = icmp slt i64 %inc80, %n + br i1 %cmp8, label %for.cond10.preheader, label %for.inc82 + +for.inc82: ; preds = %for.inc79, %for.cond7.preheader + %B.addr.3.lcssa = phi i64* [ %B.addr.238, %for.cond7.preheader ], [ %B.addr.4.lcssa, %for.inc79 ] + %inc83 = add nsw i64 %k.037, 1 + %cmp5 = icmp slt i64 %inc83, %n + br i1 %cmp5, label %for.cond7.preheader, label %for.inc85 + +for.inc85: ; preds = %for.inc82, %for.cond4.preheader + %B.addr.2.lcssa = phi i64* [ %B.addr.142, %for.cond4.preheader ], [ %B.addr.3.lcssa, %for.inc82 ] + %inc86 = add nsw i64 %j.041, 1 + %cmp2 = icmp slt i64 %inc86, %n + br i1 %cmp2, label %for.cond4.preheader, label %for.inc88 + +for.inc88: ; preds = %for.inc85, %for.cond1.preheader + %B.addr.1.lcssa = phi i64* [ %B.addr.046, %for.cond1.preheader ], [ %B.addr.2.lcssa, %for.inc85 ] + %inc89 = add nsw i64 %i.045, 1 + %cmp = icmp slt i64 %inc89, %n + br i1 %cmp, label %for.cond1.preheader, label %for.end90 + +for.end90: ; preds = %for.inc88, %entry + ret void +} + + +;; cleanup around chars, shorts, ints +;;void p4(int *A, int *B, long int n) +;; for (char i = 0; i < n; i++) +;; A[i + 2] = ... +;; ... = A[i]; + +define void @p4(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp { +entry: + %cmp1 = icmp sgt i64 %n, 0 + br i1 %cmp1, label %for.body, label %for.end + +for.body: ; preds = %for.body, %entry + %i.03 = phi i8 [ %inc, %for.body ], [ 0, %entry ] + %B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %entry ] + %conv2 = sext i8 %i.03 to i32 + %conv3 = sext i8 %i.03 to i64 + %add = add i64 %conv3, 2 + %arrayidx = getelementptr inbounds i32* %A, i64 %add + store i32 %conv2, i32* %arrayidx, align 4 + %idxprom4 = sext i8 %i.03 to i64 + %arrayidx5 = getelementptr inbounds i32* %A, i64 %idxprom4 + %0 = load i32* %arrayidx5, align 4 +; CHECK: da analyze - flow [*|<]! + %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1 + store i32 %0, i32* %B.addr.02, align 4 + %inc = add i8 %i.03, 1 + %conv = sext i8 %inc to i64 + %cmp = icmp slt i64 %conv, %n + br i1 %cmp, label %for.body, label %for.end + +for.end: ; preds = %for.body, %entry + ret void +} + + +;;void p5(int *A, int *B, long int n) +;; for (short i = 0; i < n; i++) +;; A[i + 2] = ... +;; ... = A[i]; + +define void @p5(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp { +entry: + %cmp1 = icmp sgt i64 %n, 0 + br i1 %cmp1, label %for.body, label %for.end + +for.body: ; preds = %for.body, %entry + %i.03 = phi i16 [ %inc, %for.body ], [ 0, %entry ] + %B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %entry ] + %conv2 = sext i16 %i.03 to i32 + %conv3 = sext i16 %i.03 to i64 + %add = add i64 %conv3, 2 + %arrayidx = getelementptr inbounds i32* %A, i64 %add + store i32 %conv2, i32* %arrayidx, align 4 + %idxprom4 = sext i16 %i.03 to i64 + %arrayidx5 = getelementptr inbounds i32* %A, i64 %idxprom4 + %0 = load i32* %arrayidx5, align 4 +; CHECK: da analyze - flow [*|<]! + %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1 + store i32 %0, i32* %B.addr.02, align 4 + %inc = add i16 %i.03, 1 + %conv = sext i16 %inc to i64 + %cmp = icmp slt i64 %conv, %n + br i1 %cmp, label %for.body, label %for.end + +for.end: ; preds = %for.body, %entry + ret void +} + + +;;void p6(int *A, int *B, long int n) +;; for (int i = 0; i < n; i++) +;; A[i + 2] = ... +;; ... = A[i]; + +define void @p6(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp { +entry: + %cmp1 = icmp sgt i64 %n, 0 + br i1 %cmp1, label %for.body, label %for.end + +for.body: ; preds = %for.body, %entry + %i.03 = phi i32 [ %inc, %for.body ], [ 0, %entry ] + %B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %entry ] + %add = add nsw i32 %i.03, 2 + %idxprom = sext i32 %add to i64 + %arrayidx = getelementptr inbounds i32* %A, i64 %idxprom + store i32 %i.03, i32* %arrayidx, align 4 + %idxprom2 = sext i32 %i.03 to i64 + %arrayidx3 = getelementptr inbounds i32* %A, i64 %idxprom2 + %0 = load i32* %arrayidx3, align 4 +; CHECK: da analyze - consistent flow [2]! + %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1 + store i32 %0, i32* %B.addr.02, align 4 + %inc = add nsw i32 %i.03, 1 + %conv = sext i32 %inc to i64 + %cmp = icmp slt i64 %conv, %n + br i1 %cmp, label %for.body, label %for.end + +for.end: ; preds = %for.body, %entry + ret void +} + + +;;void p7(unsigned *A, unsigned *B, char n) +;; A[n] = ... +;; ... = A[n + 1]; + +define void @p7(i32* %A, i32* %B, i8 signext %n) nounwind uwtable ssp { +entry: + %idxprom = sext i8 %n to i64 + %arrayidx = getelementptr inbounds i32* %A, i64 %idxprom + store i32 0, i32* %arrayidx, align 4 + %conv = sext i8 %n to i64 + %add = add i64 %conv, 1 + %arrayidx2 = getelementptr inbounds i32* %A, i64 %add + %0 = load i32* %arrayidx2, align 4 +; CHECK: da analyze - none! + store i32 %0, i32* %B, align 4 + ret void +} + + + +;;void p8(unsigned *A, unsigned *B, short n) +;; A[n] = ... +;; ... = A[n + 1]; + +define void @p8(i32* %A, i32* %B, i16 signext %n) nounwind uwtable ssp { +entry: + %idxprom = sext i16 %n to i64 + %arrayidx = getelementptr inbounds i32* %A, i64 %idxprom + store i32 0, i32* %arrayidx, align 4 + %conv = sext i16 %n to i64 + %add = add i64 %conv, 1 + %arrayidx2 = getelementptr inbounds i32* %A, i64 %add + %0 = load i32* %arrayidx2, align 4 +; CHECK: da analyze - none! + store i32 %0, i32* %B, align 4 + ret void +} + + +;;void p9(unsigned *A, unsigned *B, int n) +;; A[n] = ... +;; ... = A[n + 1]; + +define void @p9(i32* %A, i32* %B, i32 %n) nounwind uwtable ssp { +entry: + %idxprom = sext i32 %n to i64 + %arrayidx = getelementptr inbounds i32* %A, i64 %idxprom + store i32 0, i32* %arrayidx, align 4 + %add = add nsw i32 %n, 1 + %idxprom1 = sext i32 %add to i64 + %arrayidx2 = getelementptr inbounds i32* %A, i64 %idxprom1 + %0 = load i32* %arrayidx2, align 4 +; CHECK: da analyze - none! + store i32 %0, i32* %B, align 4 + ret void +} + + +;;void p10(unsigned *A, unsigned *B, unsigned n) +;; A[n] = ... +;; ... = A[n + 1]; + +define void @p10(i32* %A, i32* %B, i32 %n) nounwind uwtable ssp { +entry: + %idxprom = zext i32 %n to i64 + %arrayidx = getelementptr inbounds i32* %A, i64 %idxprom + store i32 0, i32* %arrayidx, align 4 + %add = add i32 %n, 1 + %idxprom1 = zext i32 %add to i64 + %arrayidx2 = getelementptr inbounds i32* %A, i64 %idxprom1 + %0 = load i32* %arrayidx2, align 4 +; CHECK: da analyze - none! + store i32 %0, i32* %B, align 4 + ret void +} |