Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/LoopStrengthReduce/sext-ind-var.ll

@@ -1,139 +0,0 @@
-; RUN: opt -loop-reduce -S < %s | FileCheck %s
-
-target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
-target triple = "nvptx64-unknown-unknown"
-
-; LSR used not to be able to generate a float* induction variable in
-; these cases due to scalar evolution not propagating nsw from an
-; instruction to the SCEV, preventing distributing sext into the
-; corresponding addrec.
-
-; Test this pattern:
-;
-;   for (int i = 0; i < numIterations; ++i)
-;     sum += ptr[i + offset];
-;
-define float @testadd(float* %input, i32 %offset, i32 %numIterations) {
-; CHECK-LABEL: @testadd
-; CHECK: sext i32 %offset to i64
-; CHECK: loop:
-; CHECK-DAG: phi float*
-; CHECK-DAG: phi i32
-; CHECK-NOT: sext
-
-entry:
-  br label %loop
-
-loop:
-  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
-  %sum = phi float [ %nextsum, %loop ], [ 0.000000e+00, %entry ]
-  %index32 = add nuw nsw i32 %i, %offset
-  %index64 = sext i32 %index32 to i64
-  %ptr = getelementptr inbounds float, float* %input, i64 %index64
-  %addend = load float, float* %ptr, align 4
-  %nextsum = fadd float %sum, %addend
-  %nexti = add nuw nsw i32 %i, 1
-  %exitcond = icmp eq i32 %nexti, %numIterations
-  br i1 %exitcond, label %exit, label %loop
-
-exit:
-  ret float %nextsum
-}
-
-; Test this pattern:
-;
-;   for (int i = 0; i < numIterations; ++i)
-;     sum += ptr[i - offset];
-;
-define float @testsub(float* %input, i32 %offset, i32 %numIterations) {
-; CHECK-LABEL: @testsub
-; CHECK: sext i32 %offset to i64
-; CHECK: loop:
-; CHECK-DAG: phi float*
-; CHECK-DAG: phi i32
-; CHECK-NOT: sext
-
-entry:
-  br label %loop
-
-loop:
-  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
-  %sum = phi float [ %nextsum, %loop ], [ 0.000000e+00, %entry ]
-  %index32 = sub nuw nsw i32 %i, %offset
-  %index64 = sext i32 %index32 to i64
-  %ptr = getelementptr inbounds float, float* %input, i64 %index64
-  %addend = load float, float* %ptr, align 4
-  %nextsum = fadd float %sum, %addend
-  %nexti = add nuw nsw i32 %i, 1
-  %exitcond = icmp eq i32 %nexti, %numIterations
-  br i1 %exitcond, label %exit, label %loop
-
-exit:
-  ret float %nextsum
-}
-
-; Test this pattern:
-;
-;   for (int i = 0; i < numIterations; ++i)
-;     sum += ptr[i * stride];
-;
-define float @testmul(float* %input, i32 %stride, i32 %numIterations) {
-; CHECK-LABEL: @testmul
-; CHECK: sext i32 %stride to i64
-; CHECK: loop:
-; CHECK-DAG: phi float*
-; CHECK-DAG: phi i32
-; CHECK-NOT: sext
-
-entry:
-  br label %loop
-
-loop:
-  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
-  %sum = phi float [ %nextsum, %loop ], [ 0.000000e+00, %entry ]
-  %index32 = mul nuw nsw i32 %i, %stride
-  %index64 = sext i32 %index32 to i64
-  %ptr = getelementptr inbounds float, float* %input, i64 %index64
-  %addend = load float, float* %ptr, align 4
-  %nextsum = fadd float %sum, %addend
-  %nexti = add nuw nsw i32 %i, 1
-  %exitcond = icmp eq i32 %nexti, %numIterations
-  br i1 %exitcond, label %exit, label %loop
-
-exit:
-  ret float %nextsum
-}
-
-; Test this pattern:
-;
-;   for (int i = 0; i < numIterations; ++i)
-;     sum += ptr[3 * (i << 7)];
-;
-; The multiplication by 3 is to make the address calculation expensive
-; enough to force the introduction of a pointer induction variable.
-define float @testshl(float* %input, i32 %numIterations) {
-; CHECK-LABEL: @testshl
-; CHECK: loop:
-; CHECK-DAG: phi float*
-; CHECK-DAG: phi i32
-; CHECK-NOT: sext
-
-entry:
-  br label %loop
-
-loop:
-  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
-  %sum = phi float [ %nextsum, %loop ], [ 0.000000e+00, %entry ]
-  %index32 = shl nuw nsw i32 %i, 7
-  %index32mul = mul nuw nsw i32 %index32, 3
-  %index64 = sext i32 %index32mul to i64
-  %ptr = getelementptr inbounds float, float* %input, i64 %index64
-  %addend = load float, float* %ptr, align 4
-  %nextsum = fadd float %sum, %addend
-  %nexti = add nuw nsw i32 %i, 1
-  %exitcond = icmp eq i32 %nexti, %numIterations
-  br i1 %exitcond, label %exit, label %loop
-
-exit:
-  ret float %nextsum
-}