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-rw-r--r--test/Transforms/InstCombine/select.ll16
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/select.ll b/test/Transforms/InstCombine/select.ll
index 2dcc3b19f9..06d5338884 100644
--- a/test/Transforms/InstCombine/select.ll
+++ b/test/Transforms/InstCombine/select.ll
@@ -383,42 +383,58 @@ next:
}
+; SMAX(SMAX(x, y), x) -> SMAX(x, y)
define i32 @test30(i32 %x, i32 %y) {
%cmp = icmp sgt i32 %x, %y
%cond = select i1 %cmp, i32 %x, i32 %y
+
%cmp5 = icmp sgt i32 %cond, %x
%retval = select i1 %cmp5, i32 %cond, i32 %x
ret i32 %retval
+; CHECK: @test30
+; CHECK: ret i32 %cond
}
+; UMAX(UMAX(x, y), x) -> UMAX(x, y)
define i32 @test31(i32 %x, i32 %y) {
%cmp = icmp ugt i32 %x, %y
%cond = select i1 %cmp, i32 %x, i32 %y
%cmp5 = icmp ugt i32 %cond, %x
%retval = select i1 %cmp5, i32 %cond, i32 %x
ret i32 %retval
+; CHECK: @test31
+; CHECK: ret i32 %cond
}
+; SMIN(SMIN(x, y), x) -> SMIN(x, y)
define i32 @test32(i32 %x, i32 %y) {
%cmp = icmp sgt i32 %x, %y
%cond = select i1 %cmp, i32 %y, i32 %x
%cmp5 = icmp sgt i32 %cond, %x
%retval = select i1 %cmp5, i32 %x, i32 %cond
ret i32 %retval
+; CHECK: @test32
+; CHECK: ret i32 %cond
}
+; MAX(MIN(x, y), x) -> x
define i32 @test33(i32 %x, i32 %y) {
%cmp = icmp sgt i32 %x, %y
%cond = select i1 %cmp, i32 %y, i32 %x
%cmp5 = icmp sgt i32 %cond, %x
%retval = select i1 %cmp5, i32 %cond, i32 %x
ret i32 %retval
+; CHECK: @test33
+; CHECK: ret i32 %x
}
+; MIN(MAX(x, y), x) -> x
define i32 @test34(i32 %x, i32 %y) {
%cmp = icmp sgt i32 %x, %y
%cond = select i1 %cmp, i32 %x, i32 %y
%cmp5 = icmp sgt i32 %cond, %x
%retval = select i1 %cmp5, i32 %x, i32 %cond
ret i32 %retval
+; CHECK: @test34
+; CHECK: ret i32 %x
}