| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; Check that we can find and remove redundant insertvalues |
| ; CHECK-LABEL: foo_simple |
| ; CHECK-NOT: i8* %x, 0 |
| define { i8*, i64, i32 } @foo_simple(i8* %x, i8* %y) nounwind { |
| entry: |
| %0 = insertvalue { i8*, i64, i32 } undef, i8* %x, 0 |
| %1 = insertvalue { i8*, i64, i32 } %0, i8* %y, 0 |
| ret { i8*, i64, i32 } %1 |
| } |
| ; Check that we can find and remove redundant nodes in insertvalues chain |
| ; CHECK-LABEL: foo_ovwrt_chain |
| ; CHECK-NOT: i64 %y, 1 |
| ; CHECK-NOT: i32 555, 2 |
| define { i8*, i64, i32 } @foo_ovwrt_chain(i8* %x, i64 %y, i64 %z) nounwind { |
| entry: |
| %0 = insertvalue { i8*, i64, i32 } undef, i8* %x, 0 |
| %1 = insertvalue { i8*, i64, i32 } %0, i64 %y, 1 |
| %2 = insertvalue { i8*, i64, i32 } %1, i32 555, 2 |
| %3 = insertvalue { i8*, i64, i32 } %2, i64 %z, 1 |
| %4 = insertvalue { i8*, i64, i32 } %3, i32 777, 2 |
| ret { i8*, i64, i32 } %4 |
| } |
| ; Check that we propagate insertvalues only if they are use as the first |
| ; operand (as initial value of aggregate) |
| ; CHECK-LABEL: foo_use_as_second_operand |
| ; CHECK: i16 %x, 0 |
| ; CHECK: %0, 1 |
| define { i8, {i16, i32} } @foo_use_as_second_operand(i16 %x) nounwind { |
| entry: |
| %0 = insertvalue { i16, i32 } undef, i16 %x, 0 |
| %1 = insertvalue { i8, {i16, i32} } undef, { i16, i32 } %0, 1 |
| ret { i8, {i16, i32} } %1 |
| } |
