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Diffstat (limited to 'test/Transforms/Reassociate/multistep.ll')
| -rw-r--r-- | test/Transforms/Reassociate/multistep.ll | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/Transforms/Reassociate/multistep.ll b/test/Transforms/Reassociate/multistep.ll new file mode 100644 index 0000000..7466d2e --- /dev/null +++ b/test/Transforms/Reassociate/multistep.ll @@ -0,0 +1,31 @@ +; RUN: opt < %s -reassociate -S | FileCheck %s + +define i64 @multistep1(i64 %a, i64 %b, i64 %c) { +; Check that a*a*b+a*a*c is turned into a*(a*(b+c)). +; CHECK: @multistep1 + %t0 = mul i64 %a, %b + %t1 = mul i64 %a, %t0 ; a*(a*b) + %t2 = mul i64 %a, %c + %t3 = mul i64 %a, %t2 ; a*(a*c) + %t4 = add i64 %t1, %t3 +; CHECK-NEXT: add i64 %c, %b +; CHECK-NEXT: mul i64 %tmp{{.*}}, %a +; CHECK-NEXT: mul i64 %tmp{{.*}}, %a +; CHECK-NEXT: ret + ret i64 %t4 +} + +define i64 @multistep2(i64 %a, i64 %b, i64 %c, i64 %d) { +; Check that a*b+a*c+d is turned into a*(b+c)+d. +; CHECK: @multistep2 + %t0 = mul i64 %a, %b + %t1 = mul i64 %a, %c + %t2 = add i64 %t1, %d ; a*c+d + %t3 = add i64 %t0, %t2 ; a*b+(a*c+d) +; CHECK-NEXT: add i64 %c, %b +; CHECK-NEXT: mul i64 %tmp{{.*}}, %a +; CHECK-NEXT: add i64 %tmp{{.*}}, %d +; CHECK-NEXT: ret + ret i64 %t3 +} + |
